21074682 has 32 divisors (see below), whose sum is σ = 44049600. Its totient is φ = 6715008.

The previous prime is 21074681. The next prime is 21074689. The reversal of 21074682 is 28647012.

It is a super-2 number, since 2×21074682² = 888284442802248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21074681) 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, 12294 + ... + 13902.

It is an arithmetic number, because the mean of its divisors is an integer number (1376550).

Almost surely, 2^21074682 is an apocalyptic number.

21074682 is an abundant number, since it is smaller than the sum of its proper divisors (22974918).

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

21074682 is a wasteful number, since it uses less digits than its factorization.

21074682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 21074682 is about 4590.7169374728. The cubic root of 21074682 is about 276.2190814615.

The spelling of 21074682 in words is "twenty-one million, seventy-four thousand, six hundred eighty-two".