840591030 has 16 divisors (see below), whose sum is σ = 2017418544. Its totient is φ = 224157600.

The previous prime is 840591023. The next prime is 840591053. The reversal of 840591030 is 30195048.

840591030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 28019701 = 840591030 / (8 + 4 + 0 + 5 + 9 + 1 + 0 + 3 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14009821 + ... + 14009880.

It is an arithmetic number, because the mean of its divisors is an integer number (126088659).

Almost surely, 2^840591030 is an apocalyptic number.

840591030 is an abundant number, since it is smaller than the sum of its proper divisors (1176827514).

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

840591030 is a wasteful number, since it uses less digits than its factorization.

840591030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28019711.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 840591030 is about 28992.9479356619. The cubic root of 840591030 is about 943.7600377278.

The spelling of 840591030 in words is "eight hundred forty million, five hundred ninety-one thousand, thirty".