20954590 has 8 divisors (see below), whose sum is σ = 37718280. Its totient is φ = 8381832.

The previous prime is 20954581. The next prime is 20954627. The reversal of 20954590 is 9545902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1047720 + ... + 1047739.

It is an arithmetic number, because the mean of its divisors is an integer number (4714785).

Almost surely, 2^20954590 is an apocalyptic number.

20954590 is a deficient number, since it is larger than the sum of its proper divisors (16763690).

20954590 is a wasteful number, since it uses less digits than its factorization.

20954590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095466.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 20954590 is about 4577.6183764049. The cubic root of 20954590 is about 275.6934126246.

The spelling of 20954590 in words is "twenty million, nine hundred fifty-four thousand, five hundred ninety".