126526640 has 40 divisors (see below), whose sum is σ = 301023888. Its totient is φ = 49432320.

The previous prime is 126526633. The next prime is 126526649. The reversal of 126526640 is 46625621.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 126526597 and 126526606.

It is not an unprimeable number, because it can be changed into a prime (126526649) 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, 14951 + ... + 21830.

Almost surely, 2^126526640 is an apocalyptic number.

126526640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126526640 is an abundant number, since it is smaller than the sum of its proper divisors (174497248).

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

126526640 is a wasteful number, since it uses less digits than its factorization.

126526640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36837 (or 36831 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 126526640 is about 11248.4061093117. The cubic root of 126526640 is about 502.0272890886.

The spelling of 126526640 in words is "one hundred twenty-six million, five hundred twenty-six thousand, six hundred forty".