156447340 has 24 divisors (see below), whose sum is σ = 375473952. Its totient is φ = 53639040.

The previous prime is 156447337. The next prime is 156447341. The reversal of 156447340 is 43744651.

It is a junction number, because it is equal to n+sod(n) for n = 156447296 and 156447305.

It is not an unprimeable number, because it can be changed into a prime (156447341) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 558601 + ... + 558880.

It is an arithmetic number, because the mean of its divisors is an integer number (15644748).

Almost surely, 2^156447340 is an apocalyptic number.

156447340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156447340 is an abundant number, since it is smaller than the sum of its proper divisors (219026612).

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

156447340 is a wasteful number, since it uses less digits than its factorization.

156447340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117497 (or 1117495 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 156447340 is about 12507.8911092158. The cubic root of 156447340 is about 538.8353270572.

The spelling of 156447340 in words is "one hundred fifty-six million, four hundred forty-seven thousand, three hundred forty".