20952190 has 16 divisors (see below), whose sum is σ = 43101792. Its totient is φ = 7183584.

The previous prime is 20952179. The next prime is 20952199. The reversal of 20952190 is 9125902.

It is a super-2 number, since 2×20952190² = 877988531592200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20952199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149589 + ... + 149728.

It is an arithmetic number, because the mean of its divisors is an integer number (2693862).

Almost surely, 2^20952190 is an apocalyptic number.

20952190 is an abundant number, since it is smaller than the sum of its proper divisors (22149602).

20952190 is a wasteful number, since it uses less digits than its factorization.

20952190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299331.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 20952190 is about 4577.3562238480. The cubic root of 20952190 is about 275.6828868567.

The spelling of 20952190 in words is "twenty million, nine hundred fifty-two thousand, one hundred ninety".