156340387 has 4 divisors (see below), whose sum is σ = 178674736. Its totient is φ = 134006040.

The previous prime is 156340357. The next prime is 156340397. The reversal of 156340387 is 783043651.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 156340387 - 2⁷ = 156340259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156340307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11167164 + ... + 11167177.

It is an arithmetic number, because the mean of its divisors is an integer number (44668684).

Almost surely, 2^156340387 is an apocalyptic number.

156340387 is a deficient number, since it is larger than the sum of its proper divisors (22334349).

156340387 is an equidigital number, since it uses as much as digits as its factorization.

156340387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22334348.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 156340387 is about 12503.6149572834. The cubic root of 156340387 is about 538.7125100285.

The spelling of 156340387 in words is "one hundred fifty-six million, three hundred forty thousand, three hundred eighty-seven".