20966948 has 12 divisors (see below), whose sum is σ = 37314480. Its totient is φ = 10305672.

The previous prime is 20966923. The next prime is 20966951. The reversal of 20966948 is 84966902.

It is a super-2 number, since 2×20966948² = 879225816869408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20966899 and 20966908.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44186 + ... + 44657.

It is an arithmetic number, because the mean of its divisors is an integer number (3109540).

Almost surely, 2^20966948 is an apocalyptic number.

It is an amenable number.

20966948 is a deficient number, since it is larger than the sum of its proper divisors (16347532).

20966948 is a wasteful number, since it uses less digits than its factorization.

20966948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88906 (or 88904 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 20966948 is about 4578.9680060031. The cubic root of 20966948 is about 275.7475988379.

The spelling of 20966948 in words is "twenty million, nine hundred sixty-six thousand, nine hundred forty-eight".