214724391 has 8 divisors (see below), whose sum is σ = 327199104. Its totient is φ = 122699640.

The previous prime is 214724387. The next prime is 214724401. The reversal of 214724391 is 193427412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 214724391 - 2² = 214724387 is a prime.

It is a super-2 number, since 2×214724391² = 92213128180641762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214724311) 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, 5112465 + ... + 5112506.

It is an arithmetic number, because the mean of its divisors is an integer number (40899888).

Almost surely, 2^214724391 is an apocalyptic number.

214724391 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

214724391 is a deficient number, since it is larger than the sum of its proper divisors (112474713).

214724391 is a wasteful number, since it uses less digits than its factorization.

214724391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10224981.

The product of its digits is 12096, while the sum is 33.

The square root of 214724391 is about 14653.4770958978. The cubic root of 214724391 is about 598.8165478252.

The spelling of 214724391 in words is "two hundred fourteen million, seven hundred twenty-four thousand, three hundred ninety-one".