21473876 has 24 divisors (see below), whose sum is σ = 40236000. Its totient is φ = 9997344.

The previous prime is 21473867. The next prime is 21473909. The reversal of 21473876 is 67837412.

It is a super-2 number, since 2×21473876² = 922254700926752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

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, 2090 + ... + 6878.

It is an arithmetic number, because the mean of its divisors is an integer number (1676500).

Almost surely, 2^21473876 is an apocalyptic number.

It is an amenable number.

21473876 is a deficient number, since it is larger than the sum of its proper divisors (18762124).

21473876 is a wasteful number, since it uses less digits than its factorization.

21473876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4871 (or 4869 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 21473876 is about 4633.9913681404. The cubic root of 21473876 is about 277.9522199340.

The spelling of 21473876 in words is "twenty-one million, four hundred seventy-three thousand, eight hundred seventy-six".