20965450 has 24 divisors (see below), whose sum is σ = 42541920. Its totient is φ = 7623600.

The previous prime is 20965447. The next prime is 20965453. The reversal of 20965450 is 5456902.

It is an interprime number because it is at equal distance from previous prime (20965447) and next prime (20965453).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20965453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18510 + ... + 19609.

It is an arithmetic number, because the mean of its divisors is an integer number (1772580).

Almost surely, 2^20965450 is an apocalyptic number.

20965450 is an abundant number, since it is smaller than the sum of its proper divisors (21576470).

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

20965450 is a wasteful number, since it uses less digits than its factorization.

20965450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38142 (or 38137 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 20965450 is about 4578.8044291059. The cubic root of 20965450 is about 275.7410316805.

The spelling of 20965450 in words is "twenty million, nine hundred sixty-five thousand, four hundred fifty".