20971962 has 36 divisors (see below), whose sum is σ = 49950810. Its totient is φ = 6354480.

The previous prime is 20971961. The next prime is 20971969. The reversal of 20971962 is 26917902.

It can be written as a sum of positive squares in only one way, i.e., 11553201 + 9418761 = 3399^2 + 3069^2 .

It is not an unprimeable number, because it can be changed into a prime (20971961) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2637 + ... + 6992.

Almost surely, 2^20971962 is an apocalyptic number.

20971962 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20971962 is an abundant number, since it is smaller than the sum of its proper divisors (28978848).

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

20971962 is a wasteful number, since it uses less digits than its factorization.

20971962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9659 (or 9645 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 20971962 is about 4579.5154765543. The cubic root of 20971962 is about 275.7695776887.

The spelling of 20971962 in words is "twenty million, nine hundred seventy-one thousand, nine hundred sixty-two".