Search a number
-
+
156934947 = 3134023973
BaseRepresentation
bin10010101101010…
…10001100100011
3101221022010021110
421112222030203
5310133404242
623323354403
73613632201
oct1126521443
9357263243
10156934947
1180649604
1244682a03
1326689620
1416bb2071
15db9e39c
hex95aa323

156934947 has 8 divisors (see below), whose sum is σ = 225342544. Its totient is φ = 96575328.

The previous prime is 156934937. The next prime is 156934949. The reversal of 156934947 is 749439651.

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

It is not a de Polignac number, because 156934947 - 28 = 156934691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156934896 and 156934905.

It is not an unprimeable number, because it can be changed into a prime (156934949) 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, 2011948 + ... + 2012025.

It is an arithmetic number, because the mean of its divisors is an integer number (28167818).

Almost surely, 2156934947 is an apocalyptic number.

156934947 is a deficient number, since it is larger than the sum of its proper divisors (68407597).

156934947 is a wasteful number, since it uses less digits than its factorization.

156934947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4023989.

The product of its digits is 816480, while the sum is 48.

The square root of 156934947 is about 12527.3679198785. The cubic root of 156934947 is about 539.3945511904.

The spelling of 156934947 in words is "one hundred fifty-six million, nine hundred thirty-four thousand, nine hundred forty-seven".

Divisors: 1 3 13 39 4023973 12071919 52311649 156934947