155433816 has 80 divisors (see below), whose sum is σ = 454330800. Its totient is φ = 49553856.

The previous prime is 155433809. The next prime is 155433821. The reversal of 155433816 is 618334551.

155433816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9690 + ... + 20118.

It is an arithmetic number, because the mean of its divisors is an integer number (5679135).

Almost surely, 2^155433816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155433816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227165400).

155433816 is an abundant number, since it is smaller than the sum of its proper divisors (298896984).

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

155433816 is a wasteful number, since it uses less digits than its factorization.

155433816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10470 (or 10457 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 155433816 is about 12467.3098942795. The cubic root of 155433816 is about 537.6692134261.

The spelling of 155433816 in words is "one hundred fifty-five million, four hundred thirty-three thousand, eight hundred sixteen".