126877890 has 32 divisors (see below), whose sum is σ = 317748096. Its totient is φ = 32362880.

The previous prime is 126877879. The next prime is 126877909. The reversal of 126877890 is 98778621.

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, 91251 + ... + 92630.

It is an arithmetic number, because the mean of its divisors is an integer number (9929628).

Almost surely, 2^126877890 is an apocalyptic number.

126877890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126877890 is an abundant number, since it is smaller than the sum of its proper divisors (190870206).

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

126877890 is a wasteful number, since it uses less digits than its factorization.

126877890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183914.

The product of its (nonzero) digits is 338688, while the sum is 48.

The square root of 126877890 is about 11264.0086115024. The cubic root of 126877890 is about 502.4914183827.

The spelling of 126877890 in words is "one hundred twenty-six million, eight hundred seventy-seven thousand, eight hundred ninety".