156845420 has 12 divisors (see below), whose sum is σ = 329375424. Its totient is φ = 62738160.

The previous prime is 156845407. The next prime is 156845443. The reversal of 156845420 is 24548651.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3921116 + ... + 3921155.

It is an arithmetic number, because the mean of its divisors is an integer number (27447952).

Almost surely, 2^156845420 is an apocalyptic number.

156845420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156845420 is an abundant number, since it is smaller than the sum of its proper divisors (172530004).

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

156845420 is a wasteful number, since it uses less digits than its factorization.

156845420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7842280 (or 7842278 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 156845420 is about 12523.7941535303. The cubic root of 156845420 is about 539.2919618424.

The spelling of 156845420 in words is "one hundred fifty-six million, eight hundred forty-five thousand, four hundred twenty".