20369970 has 48 divisors (see below), whose sum is σ = 53239680. Its totient is φ = 5403552.

The previous prime is 20369969. The next prime is 20369981. The reversal of 20369970 is 7996302.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21037 + ... + 21983.

It is an arithmetic number, because the mean of its divisors is an integer number (1109160).

Almost surely, 2^20369970 is an apocalyptic number.

20369970 is an abundant number, since it is smaller than the sum of its proper divisors (32869710).

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

20369970 is a wasteful number, since it uses less digits than its factorization.

20369970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199 (or 1196 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 20369970 is about 4513.3103150570. The cubic root of 20369970 is about 273.1053009233.

The spelling of 20369970 in words is "twenty million, three hundred sixty-nine thousand, nine hundred seventy".