116561440 has 48 divisors (see below), whose sum is σ = 284883480. Its totient is φ = 45015040.

The previous prime is 116561437. The next prime is 116561449. The reversal of 116561440 is 44165611.

It can be written as a sum of positive squares in 4 ways, for example, as 92236816 + 24324624 = 9604^2 + 4932^2 .

It is a junction number, because it is equal to n+sod(n) for n = 116561399 and 116561408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116561449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7921 + ... + 17200.

Almost surely, 2^116561440 is an apocalyptic number.

116561440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

116561440 is an abundant number, since it is smaller than the sum of its proper divisors (168322040).

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

116561440 is a wasteful number, since it uses less digits than its factorization.

116561440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25165 (or 25157 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 116561440 is about 10796.3623503475. The cubic root of 116561440 is about 488.4854526017.

The spelling of 116561440 in words is "one hundred sixteen million, five hundred sixty-one thousand, four hundred forty".