115447820 has 12 divisors (see below), whose sum is σ = 242440464. Its totient is φ = 46179120.

The previous prime is 115447793. The next prime is 115447861. The reversal of 115447820 is 28744511.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2886176 + ... + 2886215.

It is an arithmetic number, because the mean of its divisors is an integer number (20203372).

Almost surely, 2^115447820 is an apocalyptic number.

115447820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115447820 is an abundant number, since it is smaller than the sum of its proper divisors (126992644).

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

115447820 is a wasteful number, since it uses less digits than its factorization.

115447820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5772400 (or 5772398 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 115447820 is about 10744.6647225495. The cubic root of 115447820 is about 486.9248197737.

The spelling of 115447820 in words is "one hundred fifteen million, four hundred forty-seven thousand, eight hundred twenty".