21472594 has 16 divisors (see below), whose sum is σ = 37840320. Its totient is φ = 9009360.

The previous prime is 21472589. The next prime is 21472597. The reversal of 21472594 is 49527412.

It is a super-2 number, since 2×21472594² = 922144586177672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21472597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37254 + ... + 37825.

It is an arithmetic number, because the mean of its divisors is an integer number (2365020).

Almost surely, 2^21472594 is an apocalyptic number.

21472594 is a deficient number, since it is larger than the sum of its proper divisors (16367726).

21472594 is a wasteful number, since it uses less digits than its factorization.

21472594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75105.

The product of its digits is 20160, while the sum is 34.

The square root of 21472594 is about 4633.8530403974. The cubic root of 21472594 is about 277.9466885333.

The spelling of 21472594 in words is "twenty-one million, four hundred seventy-two thousand, five hundred ninety-four".