21160734 has 16 divisors (see below), whose sum is σ = 48367488. Its totient is φ = 6045912.

The previous prime is 21160721. The next prime is 21160747. The reversal of 21160734 is 43706112.

It is an interprime number because it is at equal distance from previous prime (21160721) and next prime (21160747).

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, 251872 + ... + 251955.

It is an arithmetic number, because the mean of its divisors is an integer number (3022968).

Almost surely, 2^21160734 is an apocalyptic number.

21160734 is an abundant number, since it is smaller than the sum of its proper divisors (27206754).

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

21160734 is a wasteful number, since it uses less digits than its factorization.

21160734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503839.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 21160734 is about 4600.0797819168. The cubic root of 21160734 is about 276.5945228903.

Adding to 21160734 its reverse (43706112), we get a palindrome (64866846).

The spelling of 21160734 in words is "twenty-one million, one hundred sixty thousand, seven hundred thirty-four".