20952912 has 40 divisors (see below), whose sum is σ = 54621504. Its totient is φ = 6920704.

The previous prime is 20952887. The next prime is 20952923. The reversal of 20952912 is 21925902.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20952912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3493 + ... + 7355.

Almost surely, 2^20952912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20952912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27310752).

20952912 is an abundant number, since it is smaller than the sum of its proper divisors (33668592).

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

20952912 is a wasteful number, since it uses less digits than its factorization.

20952912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3987 (or 3981 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 20952912 is about 4577.4350896545. The cubic root of 20952912 is about 275.6860534431.

The spelling of 20952912 in words is "twenty million, nine hundred fifty-two thousand, nine hundred twelve".