126899656 has 32 divisors (see below), whose sum is σ = 256750200. Its totient is φ = 58452480.

The previous prime is 126899629. The next prime is 126899659. The reversal of 126899656 is 656998621.

It can be written as a sum of positive squares in 4 ways, for example, as 78039556 + 48860100 = 8834^2 + 6990^2 .

It is a super-2 number, since 2×126899656² = 32207045385836672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (126899659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72876 + ... + 74596.

Almost surely, 2^126899656 is an apocalyptic number.

It is an amenable number.

126899656 is an abundant number, since it is smaller than the sum of its proper divisors (129850544).

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

126899656 is a wasteful number, since it uses less digits than its factorization.

126899656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449 (or 2445 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 52.

The square root of 126899656 is about 11264.9747447564. The cubic root of 126899656 is about 502.5201510033.

The spelling of 126899656 in words is "one hundred twenty-six million, eight hundred ninety-nine thousand, six hundred fifty-six".