155228788 has 48 divisors (see below), whose sum is σ = 326975040. Its totient is φ = 63532800.

The previous prime is 155228783. The next prime is 155228789. The reversal of 155228788 is 887822551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155228783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20143 + ... + 26761.

It is an arithmetic number, because the mean of its divisors is an integer number (6811980).

Almost surely, 2^155228788 is an apocalyptic number.

It is an amenable number.

155228788 is an abundant number, since it is smaller than the sum of its proper divisors (171746252).

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

155228788 is a wasteful number, since it uses less digits than its factorization.

155228788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6688 (or 6686 counting only the distinct ones).

The product of its digits is 358400, while the sum is 46.

The square root of 155228788 is about 12459.0845570612. The cubic root of 155228788 is about 537.4327017238.

It can be divided in two parts, 15522 and 8788, that added together give a triangular number (24310 = T₂₂₀).

The spelling of 155228788 in words is "one hundred fifty-five million, two hundred twenty-eight thousand, seven hundred eighty-eight".