126687220 has 48 divisors (see below), whose sum is σ = 302859648. Its totient is φ = 44063360.

The previous prime is 126687203. The next prime is 126687221. The reversal of 126687220 is 22786621.

It is a super-2 number, since 2×126687220² = 32099303422656800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126687221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7459 + ... + 17578.

It is an arithmetic number, because the mean of its divisors is an integer number (6309576).

Almost surely, 2^126687220 is an apocalyptic number.

126687220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126687220 is an abundant number, since it is smaller than the sum of its proper divisors (176172428).

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

126687220 is a wasteful number, since it uses less digits than its factorization.

126687220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25080 (or 25078 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 126687220 is about 11255.5417461800. The cubic root of 126687220 is about 502.2395802498.

The spelling of 126687220 in words is "one hundred twenty-six million, six hundred eighty-seven thousand, two hundred twenty".