215829220308 has 24 divisors (see below), whose sum is σ = 542340092448. Its totient is φ = 66408990816.

The previous prime is 215829220307. The next prime is 215829220339. The reversal of 215829220308 is 803022928512.

It is a super-2 number, since 2×215829220308² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 215829220308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215829220307) 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, 691760166 + ... + 691760477.

It is an arithmetic number, because the mean of its divisors is an integer number (22597503852).

Almost surely, 2^215829220308 is an apocalyptic number.

It is an amenable number.

215829220308 is an abundant number, since it is smaller than the sum of its proper divisors (326510872140).

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

215829220308 is a wasteful number, since it uses less digits than its factorization.

215829220308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383520663 (or 1383520661 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 215829220308 in words is "two hundred fifteen billion, eight hundred twenty-nine million, two hundred twenty thousand, three hundred eight".