126863964 has 72 divisors (see below), whose sum is σ = 328582800. Its totient is φ = 41260032.

The previous prime is 126863903. The next prime is 126863977. The reversal of 126863964 is 469368621.

126863964 is a `hidden beast` number, since 1 + 2 + 6 + 8 + 639 + 6 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 359212 + ... + 359564.

It is an arithmetic number, because the mean of its divisors is an integer number (4563650).

Almost surely, 2^126863964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126863964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164291400).

126863964 is an abundant number, since it is smaller than the sum of its proper divisors (201718836).

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

126863964 is a wasteful number, since it uses less digits than its factorization.

126863964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579 (or 574 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 126863964 is about 11263.3904309493. The cubic root of 126863964 is about 502.4730333787.

The spelling of 126863964 in words is "one hundred twenty-six million, eight hundred sixty-three thousand, nine hundred sixty-four".