21074376 has 16 divisors (see below), whose sum is σ = 52686000. Its totient is φ = 7024784.

The previous prime is 21074359. The next prime is 21074393. The reversal of 21074376 is 67347012.

It is an interprime number because it is at equal distance from previous prime (21074359) and next prime (21074393).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439026 + ... + 439073.

It is an arithmetic number, because the mean of its divisors is an integer number (3292875).

Almost surely, 2^21074376 is an apocalyptic number.

It is an amenable number.

21074376 is an abundant number, since it is smaller than the sum of its proper divisors (31611624).

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

21074376 is a wasteful number, since it uses less digits than its factorization.

21074376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878108 (or 878104 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 21074376 is about 4590.6836092242. The cubic root of 21074376 is about 276.2177445738.

The spelling of 21074376 in words is "twenty-one million, seventy-four thousand, three hundred seventy-six".