21274034 has 32 divisors (see below), whose sum is σ = 35544960. Its totient is φ = 9504000.

The previous prime is 21274031. The next prime is 21274037. The reversal of 21274034 is 43047212.

It is an interprime number because it is at equal distance from previous prime (21274031) and next prime (21274037).

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (21274031) 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, 88154 + ... + 88394.

It is an arithmetic number, because the mean of its divisors is an integer number (1110780).

Almost surely, 2^21274034 is an apocalyptic number.

21274034 is a deficient number, since it is larger than the sum of its proper divisors (14270926).

21274034 is a wasteful number, since it uses less digits than its factorization.

21274034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 21274034 is about 4612.3783452791. The cubic root of 21274034 is about 277.0872971387.

The spelling of 21274034 in words is "twenty-one million, two hundred seventy-four thousand, thirty-four".