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24494980 = 2251976217
BaseRepresentation
bin101110101110…
…0001110000100
31201002110210111
41131130032010
522232314410
62233002404
7415126636
oct135341604
951073714
1024494980
1112910494
128253404
1350c8393
143378a56
15223cb8a
hex175c384

24494980 has 24 divisors (see below), whose sum is σ = 51708888. Its totient is φ = 9746688.

The previous prime is 24494969. The next prime is 24495001. The reversal of 24494980 is 8949442.

It can be written as a sum of positive squares in 4 ways, for example, as 11778624 + 12716356 = 3432^2 + 3566^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 832 + ... + 7048.

It is an arithmetic number, because the mean of its divisors is an integer number (2154537).

Almost surely, 224494980 is an apocalyptic number.

24494980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

24494980 is an abundant number, since it is smaller than the sum of its proper divisors (27213908).

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

24494980 is a wasteful number, since it uses less digits than its factorization.

24494980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6423 (or 6421 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 24494980 is about 4949.2403457500. The cubic root of 24494980 is about 290.4194485175.

The spelling of 24494980 in words is "twenty-four million, four hundred ninety-four thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 197 394 788 985 1970 3940 6217 12434 24868 31085 62170 124340 1224749 2449498 4898996 6123745 12247490 24494980