126677790 has 64 divisors (see below), whose sum is σ = 352512000. Its totient is φ = 32310432.

The previous prime is 126677783. The next prime is 126677809. The reversal of 126677790 is 97776621.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3990 + ... + 16409.

It is an arithmetic number, because the mean of its divisors is an integer number (5508000).

Almost surely, 2^126677790 is an apocalyptic number.

126677790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126677790 is an abundant number, since it is smaller than the sum of its proper divisors (225834210).

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

126677790 is a wasteful number, since it uses less digits than its factorization.

126677790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20438 (or 20432 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The square root of 126677790 is about 11255.1228336256. The cubic root of 126677790 is about 502.2271184909.

The spelling of 126677790 in words is "one hundred twenty-six million, six hundred seventy-seven thousand, seven hundred ninety".