21160790 has 16 divisors (see below), whose sum is σ = 43530912. Its totient is φ = 7255104.

The previous prime is 21160787. The next prime is 21160793. The reversal of 21160790 is 9706112.

It is an interprime number because it is at equal distance from previous prime (21160787) and next prime (21160793).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21160793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151079 + ... + 151218.

It is an arithmetic number, because the mean of its divisors is an integer number (2720682).

Almost surely, 2^21160790 is an apocalyptic number.

21160790 is an abundant number, since it is smaller than the sum of its proper divisors (22370122).

21160790 is a wasteful number, since it uses less digits than its factorization.

21160790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302311.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 21160790 is about 4600.0858687638. The cubic root of 21160790 is about 276.5947668844.

The spelling of 21160790 in words is "twenty-one million, one hundred sixty thousand, seven hundred ninety".