21474310 has 32 divisors (see below), whose sum is σ = 45414432. Its totient is φ = 7207680.

The previous prime is 21474293. The next prime is 21474353. The reversal of 21474310 is 1347412.

It is a super-2 number, since 2×21474310² = 922291979952200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6079 + ... + 8938.

It is an arithmetic number, because the mean of its divisors is an integer number (1419201).

Almost surely, 2^21474310 is an apocalyptic number.

21474310 is an abundant number, since it is smaller than the sum of its proper divisors (23940122).

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

21474310 is a wasteful number, since it uses less digits than its factorization.

21474310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15048.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 21474310 is about 4634.0381957856. The cubic root of 21474310 is about 277.9540924488.

The spelling of 21474310 in words is "twenty-one million, four hundred seventy-four thousand, three hundred ten".