156400845 has 8 divisors (see below), whose sum is σ = 250241376. Its totient is φ = 83413776.

The previous prime is 156400841. The next prime is 156400877. The reversal of 156400845 is 548004651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 156400845 - 2² = 156400841 is a prime.

It is a super-2 number, since 2×156400845² = 48922448633428050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156400841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5213347 + ... + 5213376.

It is an arithmetic number, because the mean of its divisors is an integer number (31280172).

Almost surely, 2^156400845 is an apocalyptic number.

156400845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

156400845 is a deficient number, since it is larger than the sum of its proper divisors (93840531).

156400845 is a wasteful number, since it uses less digits than its factorization.

156400845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10426731.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 156400845 is about 12506.0323444328. The cubic root of 156400845 is about 538.7819424683.

The spelling of 156400845 in words is "one hundred fifty-six million, four hundred thousand, eight hundred forty-five".