21314190 has 16 divisors (see below), whose sum is σ = 51154128. Its totient is φ = 5683776.

The previous prime is 21314179. The next prime is 21314191. The reversal of 21314190 is 9141312.

It is a super-2 number, since 2×21314190² = 908589390712200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21314191) 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, 355207 + ... + 355266.

It is an arithmetic number, because the mean of its divisors is an integer number (3197133).

Almost surely, 2^21314190 is an apocalyptic number.

21314190 is an abundant number, since it is smaller than the sum of its proper divisors (29839938).

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

21314190 is a wasteful number, since it uses less digits than its factorization.

21314190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710483.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 21314190 is about 4616.7293617885. The cubic root of 21314190 is about 277.2615271265.

The spelling of 21314190 in words is "twenty-one million, three hundred fourteen thousand, one hundred ninety".