20697954 has 32 divisors (see below), whose sum is σ = 44513280. Its totient is φ = 6395472.

The previous prime is 20697923. The next prime is 20697977. The reversal of 20697954 is 45979602.

It is a super-2 number, since 2×20697954² = 856810599572232, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3427 + ... + 7289.

It is an arithmetic number, because the mean of its divisors is an integer number (1391040).

Almost surely, 2^20697954 is an apocalyptic number.

20697954 is an abundant number, since it is smaller than the sum of its proper divisors (23815326).

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

20697954 is a wasteful number, since it uses less digits than its factorization.

20697954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3934.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 20697954 is about 4549.5004121332. The cubic root of 20697954 is about 274.5632914333.

The spelling of 20697954 in words is "twenty million, six hundred ninety-seven thousand, nine hundred fifty-four".