156693342 has 64 divisors (see below), whose sum is σ = 370782720. Its totient is φ = 43680384.

The previous prime is 156693337. The next prime is 156693353. The reversal of 156693342 is 243396651.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 156693342.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 31788 + ... + 36384.

It is an arithmetic number, because the mean of its divisors is an integer number (5793480).

Almost surely, 2^156693342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156693342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185391360).

156693342 is an abundant number, since it is smaller than the sum of its proper divisors (214089378).

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

156693342 is a wasteful number, since it uses less digits than its factorization.

156693342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4657.

The product of its digits is 116640, while the sum is 39.

The square root of 156693342 is about 12517.7211184784. The cubic root of 156693342 is about 539.1176055357.

The spelling of 156693342 in words is "one hundred fifty-six million, six hundred ninety-three thousand, three hundred forty-two".