126638652 has 24 divisors (see below), whose sum is σ = 337703296. Its totient is φ = 36182448.

The previous prime is 126638651. The next prime is 126638657. The reversal of 126638652 is 256836621.

It is a self number, because there is not a number n which added to its sum of digits gives 126638652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126638651) 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, 753718 + ... + 753885.

Almost surely, 2^126638652 is an apocalyptic number.

126638652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

126638652 is an abundant number, since it is smaller than the sum of its proper divisors (211064644).

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

126638652 is a wasteful number, since it uses less digits than its factorization.

126638652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507617 (or 1507615 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 126638652 is about 11253.3840243724. The cubic root of 126638652 is about 502.1753909555.

The spelling of 126638652 in words is "one hundred twenty-six million, six hundred thirty-eight thousand, six hundred fifty-two".