20213360 has 20 divisors (see below), whose sum is σ = 46996248. Its totient is φ = 8085312.

The previous prime is 20213353. The next prime is 20213399. The reversal of 20213360 is 6331202.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent 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, 126254 + ... + 126413.

Almost surely, 2^20213360 is an apocalyptic number.

20213360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20213360 is an abundant number, since it is smaller than the sum of its proper divisors (26782888).

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

20213360 is a wasteful number, since it uses less digits than its factorization.

20213360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252680 (or 252674 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 20213360 is about 4495.9270456714. The cubic root of 20213360 is about 272.4035963452.

Adding to 20213360 its reverse (6331202), we get a palindrome (26544562).

The spelling of 20213360 in words is "twenty million, two hundred thirteen thousand, three hundred sixty".