190023678 has 32 divisors (see below), whose sum is σ = 454759200. Its totient is φ = 58468608.

The previous prime is 190023667. The next prime is 190023727. The reversal of 190023678 is 876320091.

It is a super-2 number, since 2×190023678² = 72217996401295368, 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 15 ways as a sum of consecutive naturals, for example, 134643 + ... + 136046.

It is an arithmetic number, because the mean of its divisors is an integer number (14211225).

Almost surely, 2^190023678 is an apocalyptic number.

190023678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

190023678 is an abundant number, since it is smaller than the sum of its proper divisors (264735522).

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

190023678 is a wasteful number, since it uses less digits than its factorization.

190023678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270713 (or 270707 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 190023678 is about 13784.9076166654. The cubic root of 190023678 is about 574.9135880227.

The spelling of 190023678 in words is "one hundred ninety million, twenty-three thousand, six hundred seventy-eight".