22479865 has 24 divisors (see below), whose sum is σ = 29354112. Its totient is φ = 16515840.

The previous prime is 22479859. The next prime is 22479883. The reversal of 22479865 is 56897422.

22479865 = T₂₄₁ + T₂₄₂ + ... + T₅₂₉.

It is not a de Polignac number, because 22479865 - 2³ = 22479857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67750 + ... + 68080.

It is an arithmetic number, because the mean of its divisors is an integer number (1223088).

Almost surely, 2^22479865 is an apocalyptic number.

It is an amenable number.

22479865 is a deficient number, since it is larger than the sum of its proper divisors (6874247).

22479865 is a wasteful number, since it uses less digits than its factorization.

22479865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417 (or 400 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 22479865 is about 4741.2935998523. The cubic root of 22479865 is about 282.2265712630.

It can be divided in two parts, 224 and 79865, that added together give a square (80089 = 283²).

The spelling of 22479865 in words is "twenty-two million, four hundred seventy-nine thousand, eight hundred sixty-five".