840100772 has 12 divisors (see below), whose sum is σ = 1680201600. Its totient is φ = 360043176.

The previous prime is 840100771. The next prime is 840100819. The reversal of 840100772 is 277001048.

840100772 is an admirable number.

It is a super-2 number, since 2×840100772² = 1411538614229991968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (840100771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15001772 + ... + 15001827.

It is an arithmetic number, because the mean of its divisors is an integer number (140016800).

Almost surely, 2^840100772 is an apocalyptic number.

It is an amenable number.

840100772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

840100772 is a wasteful number, since it uses less digits than its factorization.

840100772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30003610 (or 30003608 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 840100772 is about 28984.4919224057. The cubic root of 840100772 is about 943.5765256227.

The spelling of 840100772 in words is "eight hundred forty million, one hundred thousand, seven hundred seventy-two".