20091952 has 10 divisors (see below), whose sum is σ = 38928188. Its totient is φ = 10045968.

The previous prime is 20091947. The next prime is 20091961. The reversal of 20091952 is 25919002.

It is a self number, because there is not a number n which added to its sum of digits gives 20091952.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627858 + ... + 627889.

Almost surely, 2^20091952 is an apocalyptic number.

It is an amenable number.

20091952 is a deficient number, since it is larger than the sum of its proper divisors (18836236).

20091952 is a wasteful number, since it uses less digits than its factorization.

20091952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255755 (or 1255749 counting only the distinct ones).

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

The square root of 20091952 is about 4482.4047117591. The cubic root of 20091952 is about 271.8571193067.

The spelling of 20091952 in words is "twenty million, ninety-one thousand, nine hundred fifty-two".