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30293760 = 28357323
BaseRepresentation
bin111001110001…
…1111100000000
32010000002020010
41303203330000
530223400020
63001144520
7515331000
oct163437400
963002203
1030293760
1116111172
12a18b140
136378903
144048000
1529d5de0
hex1ce3f00

30293760 has 288 divisors, whose sum is σ = 117734400. Its totient is φ = 6623232.

The previous prime is 30293743. The next prime is 30293819. The reversal of 30293760 is 6739203.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1317109 + ... + 1317131.

It is an arithmetic number, because the mean of its divisors is an integer number (408800).

Almost surely, 230293760 is an apocalyptic number.

30293760 is a gapful number since it is divisible by the number (30) 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 30293760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58867200).

30293760 is an abundant number, since it is smaller than the sum of its proper divisors (87440640).

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

30293760 is an equidigital number, since it uses as much as digits as its factorization.

30293760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 30293760 is about 5503.9767441369. The cubic root of 30293760 is about 311.7341588259.

The spelling of 30293760 in words is "thirty million, two hundred ninety-three thousand, seven hundred sixty".