155628885 has 8 divisors (see below), whose sum is σ = 249006240. Its totient is φ = 83002064.

The previous prime is 155628881. The next prime is 155628899. The reversal of 155628885 is 588826551.

155628885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155628885 - 2² = 155628881 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155628881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5187615 + ... + 5187644.

It is an arithmetic number, because the mean of its divisors is an integer number (31125780).

Almost surely, 2^155628885 is an apocalyptic number.

155628885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155628885 is a deficient number, since it is larger than the sum of its proper divisors (93377355).

155628885 is a wasteful number, since it uses less digits than its factorization.

155628885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10375267.

The product of its digits is 768000, while the sum is 48.

The square root of 155628885 is about 12475.1306606384. The cubic root of 155628885 is about 537.8940438465.

The spelling of 155628885 in words is "one hundred fifty-five million, six hundred twenty-eight thousand, eight hundred eighty-five".