21274076 has 6 divisors (see below), whose sum is σ = 37229640. Its totient is φ = 10637036.

The previous prime is 21274073. The next prime is 21274079. The reversal of 21274076 is 67047212.

It is an interprime number because it is at equal distance from previous prime (21274073) and next prime (21274079).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21274073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2659256 + ... + 2659263.

It is an arithmetic number, because the mean of its divisors is an integer number (6204940).

Almost surely, 2^21274076 is an apocalyptic number.

It is an amenable number.

21274076 is a deficient number, since it is larger than the sum of its proper divisors (15955564).

21274076 is a wasteful number, since it uses less digits than its factorization.

21274076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5318523 (or 5318521 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 21274076 is about 4612.3828982425. The cubic root of 21274076 is about 277.0874794839.

The spelling of 21274076 in words is "twenty-one million, two hundred seventy-four thousand, seventy-six".