156235240 has 64 divisors (see below), whose sum is σ = 402825600. Its totient is φ = 53422848.

The previous prime is 156235229. The next prime is 156235243. The reversal of 156235240 is 42532651.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 156235199 and 156235208.

It is not an unprimeable number, because it can be changed into a prime (156235243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198127 + ... + 198913.

It is an arithmetic number, because the mean of its divisors is an integer number (6294150).

Almost surely, 2^156235240 is an apocalyptic number.

156235240 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 156235240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201412800).

156235240 is an abundant number, since it is smaller than the sum of its proper divisors (246590360).

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

156235240 is a wasteful number, since it uses less digits than its factorization.

156235240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 156235240 is about 12499.4095860565. The cubic root of 156235240 is about 538.5917122640.

Adding to 156235240 its reverse (42532651), we get a palindrome (198767891).

The spelling of 156235240 in words is "one hundred fifty-six million, two hundred thirty-five thousand, two hundred forty".