156242250 has 128 divisors (see below), whose sum is σ = 440294400. Its totient is φ = 40996800.

The previous prime is 156242249. The next prime is 156242297. The reversal of 156242250 is 52242651.

156242250 is a `hidden beast` number, since 15 + 624 + 2 + 25 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 533104 + ... + 533396.

It is an arithmetic number, because the mean of its divisors is an integer number (3439800).

Almost surely, 2^156242250 is an apocalyptic number.

156242250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 156242250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220147200).

156242250 is an abundant number, since it is smaller than the sum of its proper divisors (284052150).

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

156242250 is a wasteful number, since it uses less digits than its factorization.

156242250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 156242250 is about 12499.6899961559. The cubic root of 156242250 is about 538.5997673640.

The spelling of 156242250 in words is "one hundred fifty-six million, two hundred forty-two thousand, two hundred fifty".