20954585 has 16 divisors (see below), whose sum is σ = 25909632. Its totient is φ = 16262400.

The previous prime is 20954581. The next prime is 20954627. The reversal of 20954585 is 58545902.

It is not a de Polignac number, because 20954585 - 2² = 20954581 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20954581) 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, 23345 + ... + 24225.

It is an arithmetic number, because the mean of its divisors is an integer number (1619352).

Almost surely, 2^20954585 is an apocalyptic number.

It is an amenable number.

20954585 is a deficient number, since it is larger than the sum of its proper divisors (4955047).

20954585 is an equidigital number, since it uses as much as digits as its factorization.

20954585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024.

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 20954585 is about 4577.6178302694. The cubic root of 20954585 is about 275.6933906968.

The spelling of 20954585 in words is "twenty million, nine hundred fifty-four thousand, five hundred eighty-five".