20694984 has 32 divisors (see below), whose sum is σ = 54781920. Its totient is φ = 6492416.

The previous prime is 20694983. The next prime is 20695021. The reversal of 20694984 is 48949602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20694983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24954 + ... + 25769.

It is an arithmetic number, because the mean of its divisors is an integer number (1711935).

Almost surely, 2^20694984 is an apocalyptic number.

20694984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20694984 is an abundant number, since it is smaller than the sum of its proper divisors (34086936).

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

20694984 is a wasteful number, since it uses less digits than its factorization.

20694984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50749 (or 50745 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 20694984 is about 4549.1739909570. The cubic root of 20694984 is about 274.5501582192.

The spelling of 20694984 in words is "twenty million, six hundred ninety-four thousand, nine hundred eighty-four".