21472482 has 16 divisors (see below), whose sum is σ = 43187040. Its totient is φ = 7117152.

The previous prime is 21472481. The next prime is 21472483. The reversal of 21472482 is 28427412.

It is an interprime number because it is at equal distance from previous prime (21472481) and next prime (21472483).

It is a super-2 number, since 2×21472482² = 922134966480648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21472481) 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, 8923 + ... + 11070.

It is an arithmetic number, because the mean of its divisors is an integer number (2699190).

Almost surely, 2^21472482 is an apocalyptic number.

21472482 is an abundant number, since it is smaller than the sum of its proper divisors (21714558).

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

21472482 is a wasteful number, since it uses less digits than its factorization.

21472482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20177.

The product of its digits is 7168, while the sum is 30.

The square root of 21472482 is about 4633.8409554062. The cubic root of 21472482 is about 277.9462052804.

Adding to 21472482 its reverse (28427412), we get a palindrome (49899894).

The spelling of 21472482 in words is "twenty-one million, four hundred seventy-two thousand, four hundred eighty-two".