30672320 has 56 divisors (see below), whose sum is σ = 83478624. Its totient is φ = 10515456.

The previous prime is 30672307. The next prime is 30672347. The reversal of 30672320 is 2327603.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-3 number, since 3×30672320³ (a number of 23 digits) contains 333 as substring.

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, 4607 + ... + 9086.

Almost surely, 2^30672320 is an apocalyptic number.

It is an amenable number.

30672320 is an abundant number, since it is smaller than the sum of its proper divisors (52806304).

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

30672320 is a wasteful number, since it uses less digits than its factorization.

30672320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13717 (or 13707 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 30672320 is about 5538.2596544402. The cubic root of 30672320 is about 313.0272953703.

Adding to 30672320 its reverse (2327603), we get a palindrome (32999923).

The spelling of 30672320 in words is "thirty million, six hundred seventy-two thousand, three hundred twenty".