126890964 has 36 divisors (see below), whose sum is σ = 321624576. Its totient is φ = 42181968.

The previous prime is 126890927. The next prime is 126890989. The reversal of 126890964 is 469098621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×126890964² = 32202633489698592, 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 11 ways as a sum of consecutive naturals, for example, 9187 + ... + 18389.

It is an arithmetic number, because the mean of its divisors is an integer number (8934016).

Almost surely, 2^126890964 is an apocalyptic number.

It is an amenable number.

126890964 is an abundant number, since it is smaller than the sum of its proper divisors (194733612).

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

126890964 is a wasteful number, since it uses less digits than its factorization.

126890964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9596 (or 9591 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 126890964 is about 11264.5889405695. The cubic root of 126890964 is about 502.5086773581.

The spelling of 126890964 in words is "one hundred twenty-six million, eight hundred ninety thousand, nine hundred sixty-four".