30973866 has 32 divisors (see below), whose sum is σ = 77234688. Its totient is φ = 8045040.

The previous prime is 30973861. The next prime is 30973871. The reversal of 30973866 is 66837903.

It is an interprime number because it is at equal distance from previous prime (30973861) and next prime (30973871).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (30973861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33060 + ... + 33983.

It is an arithmetic number, because the mean of its divisors is an integer number (2413584).

Almost surely, 2^30973866 is an apocalyptic number.

30973866 is an abundant number, since it is smaller than the sum of its proper divisors (46260822).

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

30973866 is a wasteful number, since it uses less digits than its factorization.

30973866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67066.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 30973866 is about 5565.4169655112. The cubic root of 30973866 is about 314.0497642468.

The spelling of 30973866 in words is "thirty million, nine hundred seventy-three thousand, eight hundred sixty-six".