20994360 has 64 divisors (see below), whose sum is σ = 64190880. Its totient is φ = 5491200.

The previous prime is 20994349. The next prime is 20994367. The reversal of 20994360 is 6349902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20994367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4710 + ... + 8010.

Almost surely, 2^20994360 is an apocalyptic number.

20994360 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 20994360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32095440).

20994360 is an abundant number, since it is smaller than the sum of its proper divisors (43196520).

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

20994360 is a wasteful number, since it uses less digits than its factorization.

20994360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368 (or 3364 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 20994360 is about 4581.9602791818. The cubic root of 20994360 is about 275.8677164864.

The spelling of 20994360 in words is "twenty million, nine hundred ninety-four thousand, three hundred sixty".