126889720 has 16 divisors (see below), whose sum is σ = 285501960. Its totient is φ = 50755872.

The previous prime is 126889691. The next prime is 126889729. The reversal of 126889720 is 27988621.

It is a super-2 number, since 2×126889720² = 32202002083356800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126889729) 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, 1586082 + ... + 1586161.

Almost surely, 2^126889720 is an apocalyptic number.

126889720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126889720 is an abundant number, since it is smaller than the sum of its proper divisors (158612240).

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

126889720 is a wasteful number, since it uses less digits than its factorization.

126889720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172254 (or 3172250 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 126889720 is about 11264.5337231507. The cubic root of 126889720 is about 502.5070352059.

The spelling of 126889720 in words is "one hundred twenty-six million, eight hundred eighty-nine thousand, seven hundred twenty".