840452672 has 14 divisors (see below), whose sum is σ = 1667773398. Its totient is φ = 420226304.

The previous prime is 840452663. The next prime is 840452677. The reversal of 840452672 is 276254048.

It can be written as a sum of positive squares in only one way, i.e., 650454016 + 189998656 = 25504^2 + 13784^2 .

It is not an unprimeable number, because it can be changed into a prime (840452677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6565973 + ... + 6566100.

Almost surely, 2^840452672 is an apocalyptic number.

It is an amenable number.

840452672 is a deficient number, since it is larger than the sum of its proper divisors (827320726).

840452672 is a wasteful number, since it uses less digits than its factorization.

840452672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13132085 (or 13132075 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 38.

The square root of 840452672 is about 28990.5617744810. The cubic root of 840452672 is about 943.7082551481.

The spelling of 840452672 in words is "eight hundred forty million, four hundred fifty-two thousand, six hundred seventy-two".