307090432 has 88 divisors (see below), whose sum is σ = 677966400. Its totient is φ = 137871360.

The previous prime is 307090429. The next prime is 307090439. The reversal of 307090432 is 234090703.

It is a tau number, because it is divible by the number of its divisors (88).

It is a self number, because there is not a number n which added to its sum of digits gives 307090432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307090439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1543069 + ... + 1543267.

Almost surely, 2^307090432 is an apocalyptic number.

307090432 is a gapful number since it is divisible by the number (32) 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 307090432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338983200).

307090432 is an abundant number, since it is smaller than the sum of its proper divisors (370875968).

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

307090432 is a wasteful number, since it uses less digits than its factorization.

307090432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 307090432 is about 17523.9958913485. The cubic root of 307090432 is about 674.6659028843.

The spelling of 307090432 in words is "three hundred seven million, ninety thousand, four hundred thirty-two".