155400768 has 140 divisors (see below), whose sum is σ = 476008192. Its totient is φ = 50077440.

The previous prime is 155400761. The next prime is 155400769. The reversal of 155400768 is 867004551.

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

It is not an unprimeable number, because it can be changed into a prime (155400761) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 160221 + ... + 161187.

Almost surely, 2^155400768 is an apocalyptic number.

155400768 is a gapful number since it is divisible by the number (18) 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 155400768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238004096).

155400768 is an abundant number, since it is smaller than the sum of its proper divisors (320607424).

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

155400768 is an equidigital number, since it uses as much as digits as its factorization.

155400768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022 (or 1003 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 155400768 is about 12465.9844376607. The cubic root of 155400768 is about 537.6311047054.

The spelling of 155400768 in words is "one hundred fifty-five million, four hundred thousand, seven hundred sixty-eight".