116921280 has 224 divisors, whose sum is σ = 430718976. Its totient is φ = 26320896.

The previous prime is 116921267. The next prime is 116921317. The reversal of 116921280 is 82129611.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

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 31 ways as a sum of consecutive naturals, for example, 853372 + ... + 853508.

Almost surely, 2^116921280 is an apocalyptic number.

116921280 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 116921280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215359488).

116921280 is an abundant number, since it is smaller than the sum of its proper divisors (313797696).

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

116921280 is a wasteful number, since it uses less digits than its factorization.

116921280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 116921280 is about 10813.0143808283. The cubic root of 116921280 is about 488.9876084698.

The spelling of 116921280 in words is "one hundred sixteen million, nine hundred twenty-one thousand, two hundred eighty".