228507705590 has 64 divisors (see below), whose sum is σ = 422587860480. Its totient is φ = 88933489920.

The previous prime is 228507705553. The next prime is 228507705599. The reversal of 228507705590 is 95507705822.

It is a happy number.

It is a super-2 number, since 2×228507705590² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228507705599) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91292279 + ... + 91294781.

It is an arithmetic number, because the mean of its divisors is an integer number (6602935320).

Almost surely, 2^228507705590 is an apocalyptic number.

228507705590 is a deficient number, since it is larger than the sum of its proper divisors (194080154890).

228507705590 is a wasteful number, since it uses less digits than its factorization.

228507705590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4197.

The product of its (nonzero) digits is 1764000, while the sum is 50.

The spelling of 228507705590 in words is "two hundred twenty-eight billion, five hundred seven million, seven hundred five thousand, five hundred ninety".