190632890 has 32 divisors (see below), whose sum is σ = 412801920. Its totient is φ = 61919424.

The previous prime is 190632877. The next prime is 190632907. The reversal of 190632890 is 98236091.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70337 + ... + 72996.

It is an arithmetic number, because the mean of its divisors is an integer number (12900060).

Almost surely, 2^190632890 is an apocalyptic number.

190632890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190632890 is an abundant number, since it is smaller than the sum of its proper divisors (222169030).

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

190632890 is a wasteful number, since it uses less digits than its factorization.

190632890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143366.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 190632890 is about 13806.9869993420. The cubic root of 190632890 is about 575.5273196617.

The spelling of 190632890 in words is "one hundred ninety million, six hundred thirty-two thousand, eight hundred ninety".