20893698 has 36 divisors (see below), whose sum is σ = 52662870. Its totient is φ = 5969376.

The previous prime is 20893693. The next prime is 20893699. The reversal of 20893698 is 89639802.

It can be written as a sum of positive squares in only one way, i.e., 20766249 + 127449 = 4557^2 + 357^2 .

It is a super-2 number, since 2×20893698² = 873093232230408, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20893693) 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, 10963 + ... + 12726.

Almost surely, 2^20893698 is an apocalyptic number.

20893698 is an abundant number, since it is smaller than the sum of its proper divisors (31769172).

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

20893698 is a wasteful number, since it uses less digits than its factorization.

20893698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23711 (or 23701 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 20893698 is about 4570.9624807036. The cubic root of 20893698 is about 275.4261074574.

The spelling of 20893698 in words is "twenty million, eight hundred ninety-three thousand, six hundred ninety-eight".