156672240 has 160 divisors (see below), whose sum is σ = 503807040. Its totient is φ = 40255488.

The previous prime is 156672223. The next prime is 156672253. The reversal of 156672240 is 42276651.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 1386424 + ... + 1386536.

It is an arithmetic number, because the mean of its divisors is an integer number (3148794).

Almost surely, 2^156672240 is an apocalyptic number.

156672240 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 156672240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251903520).

156672240 is an abundant number, since it is smaller than the sum of its proper divisors (347134800).

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

156672240 is a wasteful number, since it uses less digits than its factorization.

156672240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 156672240 is about 12516.8782050478. The cubic root of 156672240 is about 539.0934033365.

The spelling of 156672240 in words is "one hundred fifty-six million, six hundred seventy-two thousand, two hundred forty".