840074430 has 32 divisors (see below), whose sum is σ = 2171270304. Its totient is φ = 206787456.

The previous prime is 840074429. The next prime is 840074479. The reversal of 840074430 is 34470048.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1076629 + ... + 1077408.

It is an arithmetic number, because the mean of its divisors is an integer number (67852197).

Almost surely, 2^840074430 is an apocalyptic number.

840074430 is an abundant number, since it is smaller than the sum of its proper divisors (1331195874).

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

840074430 is a wasteful number, since it uses less digits than its factorization.

840074430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154060.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 840074430 is about 28984.0375034259. The cubic root of 840074430 is about 943.5666633325.

The spelling of 840074430 in words is "eight hundred forty million, seventy-four thousand, four hundred thirty".