21472295 has 12 divisors (see below), whose sum is σ = 27902376. Its totient is φ = 15855840.

The previous prime is 21472291. The next prime is 21472313. The reversal of 21472295 is 59227412.

It is not a de Polignac number, because 21472295 - 2² = 21472291 is a prime.

It is a super-2 number, since 2×21472295² = 922118905134050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21472291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11861 + ... + 13550.

It is an arithmetic number, because the mean of its divisors is an integer number (2325198).

Almost surely, 2^21472295 is an apocalyptic number.

21472295 is a deficient number, since it is larger than the sum of its proper divisors (6430081).

21472295 is a wasteful number, since it uses less digits than its factorization.

21472295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25442 (or 25429 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 21472295 is about 4633.8207777168. The cubic root of 21472295 is about 277.9453984168.

The spelling of 21472295 in words is "twenty-one million, four hundred seventy-two thousand, two hundred ninety-five".