155415288 has 128 divisors (see below), whose sum is σ = 471744000. Its totient is φ = 41679360.

The previous prime is 155415283. The next prime is 155415289. The reversal of 155415288 is 882514551.

155415288 is digitally balanced in base 2 and base 3, because in such bases 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 (155415283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 577618 + ... + 577886.

It is an arithmetic number, because the mean of its divisors is an integer number (3685500).

Almost surely, 2^155415288 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 155415288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235872000).

155415288 is an abundant number, since it is smaller than the sum of its proper divisors (316328712).

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

155415288 is a wasteful number, since it uses less digits than its factorization.

155415288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 481 counting only the distinct ones).

The product of its digits is 64000, while the sum is 39.

The square root of 155415288 is about 12466.5668088692. The cubic root of 155415288 is about 537.6478488537.

The spelling of 155415288 in words is "one hundred fifty-five million, four hundred fifteen thousand, two hundred eighty-eight".