20104972 has 6 divisors (see below), whose sum is σ = 35183708. Its totient is φ = 10052484.

The previous prime is 20104969. The next prime is 20104993. The reversal of 20104972 is 27940102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2513118 + ... + 2513125.

Almost surely, 2^20104972 is an apocalyptic number.

It is an amenable number.

20104972 is a deficient number, since it is larger than the sum of its proper divisors (15078736).

20104972 is a wasteful number, since it uses less digits than its factorization.

20104972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5026247 (or 5026245 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 20104972 is about 4483.8568219782. The cubic root of 20104972 is about 271.9158296367.

The spelling of 20104972 in words is "twenty million, one hundred four thousand, nine hundred seventy-two".