20371372 has 24 divisors (see below), whose sum is σ = 43140384. Its totient is φ = 8216832.

The previous prime is 20371367. The next prime is 20371381. The reversal of 20371372 is 27317302.

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, 20923 + ... + 21874.

It is an arithmetic number, because the mean of its divisors is an integer number (1797516).

Almost surely, 2^20371372 is an apocalyptic number.

It is an amenable number.

20371372 is an abundant number, since it is smaller than the sum of its proper divisors (22769012).

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

20371372 is a wasteful number, since it uses less digits than its factorization.

20371372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42825 (or 42823 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 20371372 is about 4513.4656307543. The cubic root of 20371372 is about 273.1115664348. Note that the first 3 decimals are identical.

Adding to 20371372 its reverse (27317302), we get a palindrome (47688674).

The spelling of 20371372 in words is "twenty million, three hundred seventy-one thousand, three hundred seventy-two".