116509428 has 120 divisors (see below), whose sum is σ = 355821312. Its totient is φ = 32550336.

The previous prime is 116509417. The next prime is 116509433. The reversal of 116509428 is 824905611.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 116509392 and 116509401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 106050 + ... + 107142.

Almost surely, 2^116509428 is an apocalyptic number.

116509428 is a gapful number since it is divisible by the number (18) 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 116509428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177910656).

116509428 is an abundant number, since it is smaller than the sum of its proper divisors (239311884).

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

116509428 is a wasteful number, since it uses less digits than its factorization.

116509428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 116509428 is about 10793.9533072920. The cubic root of 116509428 is about 488.4127845297.

The spelling of 116509428 in words is "one hundred sixteen million, five hundred nine thousand, four hundred twenty-eight".