126978808 has 16 divisors (see below), whose sum is σ = 259729560. Its totient is φ = 57717600.

The previous prime is 126978781. The next prime is 126978809. The reversal of 126978808 is 808879621.

It is a super-2 number, since 2×126978808² = 32247235362201728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126978809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721383 + ... + 721558.

Almost surely, 2^126978808 is an apocalyptic number.

It is an amenable number.

126978808 is an abundant number, since it is smaller than the sum of its proper divisors (132750752).

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

126978808 is a wasteful number, since it uses less digits than its factorization.

126978808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442958 (or 1442954 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 49.

The square root of 126978808 is about 11268.4873874003. The cubic root of 126978808 is about 502.6246094111.

The spelling of 126978808 in words is "one hundred twenty-six million, nine hundred seventy-eight thousand, eight hundred eight".