155395968 has 128 divisors (see below), whose sum is σ = 508139520. Its totient is φ = 40974336.

The previous prime is 155395951. The next prime is 155395979. The reversal of 155395968 is 869593551.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 155395968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32721 + ... + 37167.

It is an arithmetic number, because the mean of its divisors is an integer number (3969840).

Almost surely, 2^155395968 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 155395968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254069760).

155395968 is an abundant number, since it is smaller than the sum of its proper divisors (352743552).

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

155395968 is a wasteful number, since it uses less digits than its factorization.

155395968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4484 (or 4472 counting only the distinct ones).

The product of its digits is 1458000, while the sum is 51.

The square root of 155395968 is about 12465.7919122694. The cubic root of 155395968 is about 537.6255692204.

The spelling of 155395968 in words is "one hundred fifty-five million, three hundred ninety-five thousand, nine hundred sixty-eight".