115047840 has 192 divisors, whose sum is σ = 401054976. Its totient is φ = 27574272.

The previous prime is 115047839. The next prime is 115047841. The reversal of 115047840 is 48740511.

It is an interprime number because it is at equal distance from previous prime (115047839) and next prime (115047841).

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

It is a junction number, because it is equal to n+sod(n) for n = 115047798 and 115047807.

It is not an unprimeable number, because it can be changed into a prime (115047841) 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, 187374 + ... + 187986.

It is an arithmetic number, because the mean of its divisors is an integer number (2088828).

Almost surely, 2^115047840 is an apocalyptic number.

115047840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115047840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200527488).

115047840 is an abundant number, since it is smaller than the sum of its proper divisors (286007136).

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

115047840 is a wasteful number, since it uses less digits than its factorization.

115047840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 663 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 115047840 is about 10726.0356143358. The cubic root of 115047840 is about 486.3618365862.

The spelling of 115047840 in words is "one hundred fifteen million, forty-seven thousand, eight hundred forty".