21960954 has 24 divisors (see below), whose sum is σ = 47747232. Its totient is φ = 7294920.

The previous prime is 21960947. The next prime is 21960977. The reversal of 21960954 is 45906912.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3637 + ... + 7559.

It is an arithmetic number, because the mean of its divisors is an integer number (1989468).

Almost surely, 2^21960954 is an apocalyptic number.

21960954 is an abundant number, since it is smaller than the sum of its proper divisors (25786278).

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

21960954 is a wasteful number, since it uses less digits than its factorization.

21960954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4242 (or 4239 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 21960954 is about 4686.2515937581. The cubic root of 21960954 is about 280.0380645530.

The spelling of 21960954 in words is "twenty-one million, nine hundred sixty thousand, nine hundred fifty-four".