126983280 has 40 divisors (see below), whose sum is σ = 393648912. Its totient is φ = 33862144.

The previous prime is 126983279. The next prime is 126983323. The reversal of 126983280 is 82389621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×126983280² = 32249506799116800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264309 + ... + 264788.

Almost surely, 2^126983280 is an apocalyptic number.

126983280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126983280 is an abundant number, since it is smaller than the sum of its proper divisors (266665632).

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

126983280 is a wasteful number, since it uses less digits than its factorization.

126983280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529113 (or 529107 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 126983280 is about 11268.6858151250. The cubic root of 126983280 is about 502.6305098993.

The spelling of 126983280 in words is "one hundred twenty-six million, nine hundred eighty-three thousand, two hundred eighty".