20372946 has 16 divisors (see below), whose sum is σ = 44450208. Its totient is φ = 6173600.

The previous prime is 20372923. The next prime is 20372951. The reversal of 20372946 is 64927302.

20372946 is nontrivially palindromic in base 12.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon 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, 154275 + ... + 154406.

It is an arithmetic number, because the mean of its divisors is an integer number (2778138).

Almost surely, 2^20372946 is an apocalyptic number.

20372946 is an abundant number, since it is smaller than the sum of its proper divisors (24077262).

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

20372946 is a wasteful number, since it uses less digits than its factorization.

20372946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308697.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 20372946 is about 4513.6399945055. The cubic root of 20372946 is about 273.1186002686.

The spelling of 20372946 in words is "twenty million, three hundred seventy-two thousand, nine hundred forty-six".