155436836 has 12 divisors (see below), whose sum is σ = 272984460. Its totient is φ = 77441280.

The previous prime is 155436817. The next prime is 155436847. The reversal of 155436836 is 638634551.

It can be written as a sum of positive squares in 2 ways, for example, as 124188736 + 31248100 = 11144^2 + 5590^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155436793 and 155436802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68021 + ... + 70268.

It is an arithmetic number, because the mean of its divisors is an integer number (22748705).

Almost surely, 2^155436836 is an apocalyptic number.

It is an amenable number.

155436836 is a deficient number, since it is larger than the sum of its proper divisors (117547624).

155436836 is a wasteful number, since it uses less digits than its factorization.

155436836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138574 (or 138572 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 155436836 is about 12467.4310104368. The cubic root of 155436836 is about 537.6726956167.

The spelling of 155436836 in words is "one hundred fifty-five million, four hundred thirty-six thousand, eight hundred thirty-six".