115155390 has 192 divisors, whose sum is σ = 351129600. Its totient is φ = 24131520.

The previous prime is 115155389. The next prime is 115155427. The reversal of 115155390 is 93551511.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3714675 + ... + 3714705.

It is an arithmetic number, because the mean of its divisors is an integer number (1828800).

Almost surely, 2^115155390 is an apocalyptic number.

115155390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 115155390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175564800).

115155390 is an abundant number, since it is smaller than the sum of its proper divisors (235974210).

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

115155390 is a wasteful number, since it uses less digits than its factorization.

115155390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 3375, while the sum is 30.

The square root of 115155390 is about 10731.0479450984. The cubic root of 115155390 is about 486.5133443539.

The spelling of 115155390 in words is "one hundred fifteen million, one hundred fifty-five thousand, three hundred ninety".