1616327240 has 128 divisors (see below), whose sum is σ = 4119102720. Its totient is φ = 565632000.

The previous prime is 1616327239. The next prime is 1616327257. The reversal of 1616327240 is 427236161.

It is a super-2 number, since 2×1616327240² = 5225027493532035200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1616327197 and 1616327206.

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, 1643789 + ... + 1644771.

It is an arithmetic number, because the mean of its divisors is an integer number (32180490).

Almost surely, 2^1616327240 is an apocalyptic number.

1616327240 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 1616327240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059551360).

1616327240 is an abundant number, since it is smaller than the sum of its proper divisors (2502775480).

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

1616327240 is a wasteful number, since it uses less digits than its factorization.

1616327240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 1616327240 is about 40203.5724780771. The cubic root of 1616327240 is about 1173.5720671106.

The spelling of 1616327240 in words is "one billion, six hundred sixteen million, three hundred twenty-seven thousand, two hundred forty".