126650640 has 160 divisors (see below), whose sum is σ = 410723712. Its totient is φ = 32256000.

The previous prime is 126650633. The next prime is 126650651. The reversal of 126650640 is 46056621.

126650640 is nontrivially palindromic in base 11.

It is a super-2 number, since 2×126650640² = 32080769224819200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 126650598 and 126650607.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 600135 + ... + 600345.

Almost surely, 2^126650640 is an apocalyptic number.

126650640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126650640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205361856).

126650640 is an abundant number, since it is smaller than the sum of its proper divisors (284073072).

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

126650640 is a wasteful number, since it uses less digits than its factorization.

126650640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 126650640 is about 11253.9166515485. The cubic root of 126650640 is about 502.1912362722.

The spelling of 126650640 in words is "one hundred twenty-six million, six hundred fifty thousand, six hundred forty".