155748816 has 60 divisors (see below), whose sum is σ = 441430080. Its totient is φ = 51255360.

The previous prime is 155748811. The next prime is 155748823. The reversal of 155748816 is 618847551.

155748816 is a `hidden beast` number, since 1 + 557 + 4 + 88 + 16 = 666.

155748816 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155748811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4531 + ... + 18221.

It is an arithmetic number, because the mean of its divisors is an integer number (7357168).

Almost surely, 2^155748816 is an apocalyptic number.

155748816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155748816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220715040).

155748816 is an abundant number, since it is smaller than the sum of its proper divisors (285681264).

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

155748816 is a wasteful number, since it uses less digits than its factorization.

155748816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13784 (or 13775 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 155748816 is about 12479.9365383002. The cubic root of 155748816 is about 538.0321793147.

It can be divided in two parts, 1557488 and 16, that added together give a square (1557504 = 1248²).

The spelling of 155748816 in words is "one hundred fifty-five million, seven hundred forty-eight thousand, eight hundred sixteen".