840304472 has 16 divisors (see below), whose sum is σ = 1800652560. Its totient is φ = 360130464.

The previous prime is 840304457. The next prime is 840304483. The reversal of 840304472 is 274403048.

It is a super-2 number, since 2×840304472² = 1412223211326397568, 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 3 ways as a sum of consecutive naturals, for example, 7502663 + ... + 7502774.

It is an arithmetic number, because the mean of its divisors is an integer number (112540785).

Almost surely, 2^840304472 is an apocalyptic number.

It is an amenable number.

840304472 is an abundant number, since it is smaller than the sum of its proper divisors (960348088).

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

840304472 is a wasteful number, since it uses less digits than its factorization.

840304472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15005450 (or 15005446 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 840304472 is about 28988.0056575129. The cubic root of 840304472 is about 943.6527827464.

The spelling of 840304472 in words is "eight hundred forty million, three hundred four thousand, four hundred seventy-two".