215314390 has 8 divisors (see below), whose sum is σ = 387565920. Its totient is φ = 86125752.

The previous prime is 215314321. The next prime is 215314397. The reversal of 215314390 is 93413512.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215314397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10765710 + ... + 10765729.

It is an arithmetic number, because the mean of its divisors is an integer number (48445740).

Almost surely, 2^215314390 is an apocalyptic number.

215314390 is a deficient number, since it is larger than the sum of its proper divisors (172251530).

215314390 is a wasteful number, since it uses less digits than its factorization.

215314390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21531446.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 215314390 is about 14673.5949923664. The cubic root of 215314390 is about 599.3645030697.

It can be divided in two parts, 21531 and 4390, that added together give a square (25921 = 161²).

The spelling of 215314390 in words is "two hundred fifteen million, three hundred fourteen thousand, three hundred ninety".