127522990 has 48 divisors (see below), whose sum is σ = 269870832. Its totient is φ = 43255296.

The previous prime is 127522963. The next prime is 127523023. The reversal of 127522990 is 99225721.

It is a super-2 number, since 2×127522990² = 32524225957080200, 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 23 ways as a sum of consecutive naturals, for example, 46189 + ... + 48871.

It is an arithmetic number, because the mean of its divisors is an integer number (5622309).

Almost surely, 2^127522990 is an apocalyptic number.

127522990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127522990 is an abundant number, since it is smaller than the sum of its proper divisors (142347842).

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

127522990 is a wasteful number, since it uses less digits than its factorization.

127522990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801 (or 2794 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 127522990 is about 11292.6077590608. The cubic root of 127522990 is about 503.3416042772.

The spelling of 127522990 in words is "one hundred twenty-seven million, five hundred twenty-two thousand, nine hundred ninety".