797432040 has 80 divisors (see below), whose sum is σ = 2680268580. Its totient is φ = 212647680.

The previous prime is 797432021. The next prime is 797432047. The reversal of 797432040 is 40234797.

It can be written as a sum of positive squares in 2 ways, for example, as 663474564 + 133957476 = 25758^2 + 11574^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 797431986 and 797432004.

It is not an unprimeable number, because it can be changed into a prime (797432047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 119821 + ... + 126300.

Almost surely, 2^797432040 is an apocalyptic number.

It is an amenable number.

797432040 is an abundant number, since it is smaller than the sum of its proper divisors (1882836540).

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

797432040 is a wasteful number, since it uses less digits than its factorization.

797432040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246144 (or 246131 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 797432040 is about 28238.8392112707. The cubic root of 797432040 is about 927.3234174869.

The spelling of 797432040 in words is "seven hundred ninety-seven million, four hundred thirty-two thousand, forty".