840307024 has 20 divisors (see below), whose sum is σ = 1698882336. Its totient is φ = 401885792.

The previous prime is 840307007. The next prime is 840307067. The reversal of 840307024 is 420703048.

It is a super-2 number, since 2×840307024² = 1412231789167473152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 840306983 and 840307001.

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, 1141354 + ... + 1142089.

Almost surely, 2^840307024 is an apocalyptic number.

It is an amenable number.

840307024 is an abundant number, since it is smaller than the sum of its proper divisors (858575312).

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

840307024 is a wasteful number, since it uses less digits than its factorization.

840307024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2283474 (or 2283468 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 840307024 is about 28988.0496756853. The cubic root of 840307024 is about 943.6537380348.

The spelling of 840307024 in words is "eight hundred forty million, three hundred seven thousand, twenty-four".