155963860 has 48 divisors (see below), whose sum is σ = 360251136. Its totient is φ = 56356992.

The previous prime is 155963809. The next prime is 155963869. The reversal of 155963860 is 68369551.

155963860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155963869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5839 + ... + 18601.

It is an arithmetic number, because the mean of its divisors is an integer number (7505232).

Almost surely, 2^155963860 is an apocalyptic number.

155963860 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 155963860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180125568).

155963860 is an abundant number, since it is smaller than the sum of its proper divisors (204287276).

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

155963860 is a wasteful number, since it uses less digits than its factorization.

155963860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12832 (or 12830 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 155963860 is about 12488.5491551261. The cubic root of 155963860 is about 538.2796876341.

The spelling of 155963860 in words is "one hundred fifty-five million, nine hundred sixty-three thousand, eight hundred sixty".