1591479240 has 128 divisors (see below), whose sum is σ = 5307724800. Its totient is φ = 379100160.

The previous prime is 1591479233. The next prime is 1591479299. The reversal of 1591479240 is 429741951.

1591479240 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1591479192 and 1591479201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31906 + ... + 64814.

It is an arithmetic number, because the mean of its divisors is an integer number (41466600).

Almost surely, 2^1591479240 is an apocalyptic number.

1591479240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1591479240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2653862400).

1591479240 is an abundant number, since it is smaller than the sum of its proper divisors (3716245560).

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

1591479240 is a wasteful number, since it uses less digits than its factorization.

1591479240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32967 (or 32963 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 1591479240 is about 39893.3483177334. The cubic root of 1591479240 is about 1167.5271609092.

The spelling of 1591479240 in words is "one billion, five hundred ninety-one million, four hundred seventy-nine thousand, two hundred forty".