782640126 has 48 divisors (see below), whose sum is σ = 1728483120. Its totient is φ = 255864960.

The previous prime is 782640107. The next prime is 782640137. The reversal of 782640126 is 621046287.

782640126 is a `hidden beast` number, since 7 + 8 + 2 + 640 + 1 + 2 + 6 = 666.

It is a super-2 number, since 2×782640126² = 1225051133650591752, 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 23 ways as a sum of consecutive naturals, for example, 485610 + ... + 487218.

It is an arithmetic number, because the mean of its divisors is an integer number (36010065).

Almost surely, 2^782640126 is an apocalyptic number.

782640126 is an abundant number, since it is smaller than the sum of its proper divisors (945842994).

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

782640126 is a wasteful number, since it uses less digits than its factorization.

782640126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121 (or 2118 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 782640126 is about 27975.7059964534. The cubic root of 782640126 is about 921.5538195605.

The spelling of 782640126 in words is "seven hundred eighty-two million, six hundred forty thousand, one hundred twenty-six".