30901072 has 10 divisors (see below), whose sum is σ = 59870858. Its totient is φ = 15450528.

The previous prime is 30901069. The next prime is 30901097. The reversal of 30901072 is 27010903.

It can be written as a sum of positive squares in only one way, i.e., 25160256 + 5740816 = 5016^2 + 2396^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 965643 + ... + 965674.

Almost surely, 2^30901072 is an apocalyptic number.

It is an amenable number.

30901072 is a deficient number, since it is larger than the sum of its proper divisors (28969786).

30901072 is a wasteful number, since it uses less digits than its factorization.

30901072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931325 (or 1931319 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 30901072 is about 5558.8732671289. The cubic root of 30901072 is about 313.8035473121.

Adding to 30901072 its reverse (27010903), we get a palindrome (57911975).

The spelling of 30901072 in words is "thirty million, nine hundred one thousand, seventy-two".