781072422 has 16 divisors (see below), whose sum is σ = 1682310000. Its totient is φ = 240329952.

The previous prime is 781072417. The next prime is 781072451. The reversal of 781072422 is 224270187.

It is a super-2 number, since 2×781072422² = 1220148256817892168, 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 7 ways as a sum of consecutive naturals, for example, 5006797 + ... + 5006952.

It is an arithmetic number, because the mean of its divisors is an integer number (105144375).

Almost surely, 2^781072422 is an apocalyptic number.

781072422 is an abundant number, since it is smaller than the sum of its proper divisors (901237578).

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

781072422 is a wasteful number, since it uses less digits than its factorization.

781072422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10013767.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 781072422 is about 27947.6729263815. The cubic root of 781072422 is about 920.9380877248.

The spelling of 781072422 in words is "seven hundred eighty-one million, seventy-two thousand, four hundred twenty-two".