22955478 has 32 divisors (see below), whose sum is σ = 56507136. Its totient is φ = 6054048.

The previous prime is 22955461. The next prime is 22955479. The reversal of 22955478 is 87455922.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22955479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20476 + ... + 21567.

It is an arithmetic number, because the mean of its divisors is an integer number (1765848).

Almost surely, 2^22955478 is an apocalyptic number.

22955478 is an abundant number, since it is smaller than the sum of its proper divisors (33551658).

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

22955478 is a wasteful number, since it uses less digits than its factorization.

22955478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42068.

The product of its digits is 201600, while the sum is 42.

The square root of 22955478 is about 4791.1875354655. The cubic root of 22955478 is about 284.2030799688.

The spelling of 22955478 in words is "twenty-two million, nine hundred fifty-five thousand, four hundred seventy-eight".