20969994 has 8 divisors (see below), whose sum is σ = 41940000. Its totient is φ = 6989996.

The previous prime is 20969989. The next prime is 20970011. The reversal of 20969994 is 49996902.

It is a sphenic number, since it is the product of 3 distinct primes.

20969994 is an admirable number.

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, 1747494 + ... + 1747505.

It is an arithmetic number, because the mean of its divisors is an integer number (5242500).

Almost surely, 2^20969994 is an apocalyptic number.

20969994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20969994 is a wasteful number, since it uses less digits than its factorization.

20969994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3495004.

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 20969994 is about 4579.3006016203. The cubic root of 20969994 is about 275.7609513855.

It can be divided in two parts, 2096 and 9994, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 20969994 in words is "twenty million, nine hundred sixty-nine thousand, nine hundred ninety-four".