190890756 has 120 divisors (see below), whose sum is σ = 603985536. Its totient is φ = 51321600.

The previous prime is 190890697. The next prime is 190890757. The reversal of 190890756 is 657098091.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190890757) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 36081 + ... + 41031.

Almost surely, 2^190890756 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190890756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301992768).

190890756 is an abundant number, since it is smaller than the sum of its proper divisors (413094780).

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

190890756 is a wasteful number, since it uses less digits than its factorization.

190890756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4991 (or 4980 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 190890756 is about 13816.3220865757. The cubic root of 190890756 is about 575.7867048799.

The spelling of 190890756 in words is "one hundred ninety million, eight hundred ninety thousand, seven hundred fifty-six".