228161190 has 32 divisors (see below), whose sum is σ = 554190336. Its totient is φ = 60109280.

The previous prime is 228161189. The next prime is 228161191. The reversal of 228161190 is 91161822.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (228161189) and next prime (228161191).

It is a super-2 number, since 2×228161190² = 104115057244432200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228161191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43326 + ... + 48305.

It is an arithmetic number, because the mean of its divisors is an integer number (17318448).

Almost surely, 2^228161190 is an apocalyptic number.

228161190 is an abundant number, since it is smaller than the sum of its proper divisors (326029146).

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

228161190 is a wasteful number, since it uses less digits than its factorization.

228161190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91724.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 228161190 is about 15105.0054617666. The cubic root of 228161190 is about 611.0554066275.

The spelling of 228161190 in words is "two hundred twenty-eight million, one hundred sixty-one thousand, one hundred ninety".