115378890 has 128 divisors (see below), whose sum is σ = 317509632. Its totient is φ = 26584320.

The previous prime is 115378859. The next prime is 115378897. The reversal of 115378890 is 98873511.

It is not an unprimeable number, because it can be changed into a prime (115378897) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 666844 + ... + 667016.

It is an arithmetic number, because the mean of its divisors is an integer number (2480544).

Almost surely, 2^115378890 is an apocalyptic number.

115378890 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 115378890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158754816).

115378890 is an abundant number, since it is smaller than the sum of its proper divisors (202130742).

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

115378890 is a wasteful number, since it uses less digits than its factorization.

115378890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284.

The product of its (nonzero) digits is 60480, while the sum is 42.

The square root of 115378890 is about 10741.4566051351. The cubic root of 115378890 is about 486.8278916840.

The spelling of 115378890 in words is "one hundred fifteen million, three hundred seventy-eight thousand, eight hundred ninety".