20694960 has 320 divisors, whose sum is σ = 84994560. Its totient is φ = 4561920.

The previous prime is 20694943. The next prime is 20694979. The reversal of 20694960 is 6949602.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 308847 + ... + 308913.

It is an arithmetic number, because the mean of its divisors is an integer number (265608).

Almost surely, 2^20694960 is an apocalyptic number.

20694960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20694960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42497280).

20694960 is an abundant number, since it is smaller than the sum of its proper divisors (64299600).

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

20694960 is a wasteful number, since it uses less digits than its factorization.

20694960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 20694960 is about 4549.1713531148. The cubic root of 20694960 is about 274.5500520871.

The spelling of 20694960 in words is "twenty million, six hundred ninety-four thousand, nine hundred sixty".