Search a number
136940823 = 3215215647
BaseRepresentation
bin10000010100110…
…00110100010111
3100112200022111100
420022120310113
5240024101243
621331041143
73251656245
oct1012306427
9315608440
10136940823
1170332738
1239a401b3
13224a8a96
1414289795
15c0500d3
hex8298d17

136940823 has 6 divisors (see below), whose sum is σ = 197803424. Its totient is φ = 91293876.

The previous prime is 136940821. The next prime is 136940833. The reversal of 136940823 is 328049631.

It is not a de Polignac number, because 136940823 - 21 = 136940821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136940821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7607815 + ... + 7607832.

Almost surely, 2136940823 is an apocalyptic number.

136940823 is a deficient number, since it is larger than the sum of its proper divisors (60862601).

136940823 is a wasteful number, since it uses less digits than its factorization.

136940823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15215653 (or 15215650 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 136940823 is about 11702.1717215225. The cubic root of 136940823 is about 515.4394376689.

The spelling of 136940823 in words is "one hundred thirty-six million, nine hundred forty thousand, eight hundred twenty-three".

Divisors: 1 3 9 15215647 45646941 136940823