21474026 has 16 divisors (see below), whose sum is σ = 38978496. Its totient is φ = 8661696.

The previous prime is 21473987. The next prime is 21474031. The reversal of 21474026 is 62047412.

It is a super-2 number, since 2×21474026² = 922267585297352, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21473986 and 21474004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44876 + ... + 45351.

It is an arithmetic number, because the mean of its divisors is an integer number (2436156).

Almost surely, 2^21474026 is an apocalyptic number.

21474026 is a deficient number, since it is larger than the sum of its proper divisors (17504470).

21474026 is a wasteful number, since it uses less digits than its factorization.

21474026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90253.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 21474026 is about 4634.0075528639. The cubic root of 21474026 is about 277.9528671194.

The spelling of 21474026 in words is "twenty-one million, four hundred seventy-four thousand, twenty-six".