20954490 has 16 divisors (see below), whose sum is σ = 50290848. Its totient is φ = 5587856.

The previous prime is 20954467. The next prime is 20954497. The reversal of 20954490 is 9445902.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20954497) 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, 349212 + ... + 349271.

It is an arithmetic number, because the mean of its divisors is an integer number (3143178).

Almost surely, 2^20954490 is an apocalyptic number.

20954490 is an abundant number, since it is smaller than the sum of its proper divisors (29336358).

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

20954490 is a wasteful number, since it uses less digits than its factorization.

20954490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698493.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 20954490 is about 4577.6074536815. The cubic root of 20954490 is about 275.6929740670.

The spelling of 20954490 in words is "twenty million, nine hundred fifty-four thousand, four hundred ninety".