126953780 has 12 divisors (see below), whose sum is σ = 266602980. Its totient is φ = 50781504.

The previous prime is 126953779. The next prime is 126953791. The reversal of 126953780 is 87359621.

It can be written as a sum of positive squares in 2 ways, for example, as 73342096 + 53611684 = 8564^2 + 7322^2 .

It is a super-2 number, since 2×126953780² = 32234524512576800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3173825 + ... + 3173864.

It is an arithmetic number, because the mean of its divisors is an integer number (22216915).

Almost surely, 2^126953780 is an apocalyptic number.

126953780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126953780 is an abundant number, since it is smaller than the sum of its proper divisors (139649200).

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

126953780 is a wasteful number, since it uses less digits than its factorization.

126953780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6347698 (or 6347696 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 126953780 is about 11267.3768020778. The cubic root of 126953780 is about 502.5915841751.

The spelling of 126953780 in words is "one hundred twenty-six million, nine hundred fifty-three thousand, seven hundred eighty".