156155140 has 48 divisors (see below), whose sum is σ = 341671680. Its totient is φ = 59875200.

The previous prime is 156155117. The next prime is 156155147. The reversal of 156155140 is 41551651.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 156155099 and 156155108.

It is not an unprimeable number, because it can be changed into a prime (156155147) by changing a digit.

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, 86689 + ... + 88471.

It is an arithmetic number, because the mean of its divisors is an integer number (7118160).

Almost surely, 2^156155140 is an apocalyptic number.

156155140 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 156155140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170835840).

156155140 is an abundant number, since it is smaller than the sum of its proper divisors (185516540).

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

156155140 is a wasteful number, since it uses less digits than its factorization.

156155140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972 (or 1970 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 156155140 is about 12496.2050239263. The cubic root of 156155140 is about 538.4996532832.

The spelling of 156155140 in words is "one hundred fifty-six million, one hundred fifty-five thousand, one hundred forty".