126911830 has 64 divisors (see below), whose sum is σ = 257126400. Its totient is φ = 44876160.

The previous prime is 126911821. The next prime is 126911831. The reversal of 126911830 is 38119621.

It is a super-2 number, since 2×126911830² = 32213225187897800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 126911792 and 126911801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126911831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170439 + ... + 171181.

It is an arithmetic number, because the mean of its divisors is an integer number (4017600).

Almost surely, 2^126911830 is an apocalyptic number.

126911830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126911830 is an abundant number, since it is smaller than the sum of its proper divisors (130214570).

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

126911830 is a wasteful number, since it uses less digits than its factorization.

126911830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 126911830 is about 11265.5150792141. The cubic root of 126911830 is about 502.5362200900.

The spelling of 126911830 in words is "one hundred twenty-six million, nine hundred eleven thousand, eight hundred thirty".