30901689 has 32 divisors (see below), whose sum is σ = 56349440. Its totient is φ = 16298496.

The previous prime is 30901681. The next prime is 30901691. The reversal of 30901689 is 98610903.

It is not a de Polignac number, because 30901689 - 2³ = 30901681 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (30901681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3832 + ... + 8745.

It is an arithmetic number, because the mean of its divisors is an integer number (1760920).

Almost surely, 2^30901689 is an apocalyptic number.

30901689 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

30901689 is a deficient number, since it is larger than the sum of its proper divisors (25447751).

30901689 is a wasteful number, since it uses less digits than its factorization.

30901689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12606 (or 12600 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 30901689 is about 5558.9287637098. The cubic root of 30901689 is about 313.8056358643.

The spelling of 30901689 in words is "thirty million, nine hundred one thousand, six hundred eighty-nine".