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24740380 = 2257612897
BaseRepresentation
bin101111001100…
…0001000011100
31201112221102101
41132120020130
522313143010
62242134444
7420201250
oct136301034
951487371
1024740380
1112a688a5
128351424
135182ca2
143400260
15228a73a
hex179821c

24740380 has 48 divisors (see below), whose sum is σ = 60371136. Its totient is φ = 8340480.

The previous prime is 24740369. The next prime is 24740381. The reversal of 24740380 is 8304742.

It is a super-2 number, since 2×247403802 = 1224172805088800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24740381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7092 + ... + 9988.

It is an arithmetic number, because the mean of its divisors is an integer number (1257732).

Almost surely, 224740380 is an apocalyptic number.

24740380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 24740380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30185568).

24740380 is an abundant number, since it is smaller than the sum of its proper divisors (35630756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

24740380 is a wasteful number, since it uses less digits than its factorization.

24740380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974 (or 2972 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 24740380 is about 4973.9702451864. The cubic root of 24740380 is about 291.3860717304.

The spelling of 24740380 in words is "twenty-four million, seven hundred forty thousand, three hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 61 70 122 140 244 305 427 610 854 1220 1708 2135 2897 4270 5794 8540 11588 14485 20279 28970 40558 57940 81116 101395 176717 202790 353434 405580 706868 883585 1237019 1767170 2474038 3534340 4948076 6185095 12370190 24740380