189628086 has 8 divisors (see below), whose sum is σ = 379256184. Its totient is φ = 63209360.

The previous prime is 189628079. The next prime is 189628093. The reversal of 189628086 is 680826981.

It is an interprime number because it is at equal distance from previous prime (189628079) and next prime (189628093).

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

189628086 is an admirable number.

It is a super-2 number, since 2×189628086² = 71917622000046792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15802335 + ... + 15802346.

It is an arithmetic number, because the mean of its divisors is an integer number (47407023).

Almost surely, 2^189628086 is an apocalyptic number.

189628086 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

189628086 is a wasteful number, since it uses less digits than its factorization.

189628086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31604686.

The product of its (nonzero) digits is 331776, while the sum is 48.

The square root of 189628086 is about 13770.5514050818. The cubic root of 189628086 is about 574.5143584395.

The spelling of 189628086 in words is "one hundred eighty-nine million, six hundred twenty-eight thousand, eighty-six".