307430172 has 36 divisors (see below), whose sum is σ = 888132336. Its totient is φ = 87837120.

The previous prime is 307430143. The next prime is 307430183. The reversal of 307430172 is 271034703.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 609729 + ... + 610232.

Almost surely, 2^307430172 is an apocalyptic number.

It is an amenable number.

307430172 is an abundant number, since it is smaller than the sum of its proper divisors (580702164).

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

307430172 is a wasteful number, since it uses less digits than its factorization.

307430172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219978 (or 1219973 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 307430172 is about 17533.6867771727. The cubic root of 307430172 is about 674.9146097744.

Adding to 307430172 its reverse (271034703), we get a palindrome (578464875).

The spelling of 307430172 in words is "three hundred seven million, four hundred thirty thousand, one hundred seventy-two".