112720690 has 16 divisors (see below), whose sum is σ = 203551128. Its totient is φ = 44942976.

The previous prime is 112720679. The next prime is 112720691. The reversal of 112720690 is 96027211.

It is a happy number.

It is a Cunningham number, because it is equal to 10617²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 49406841 + 63313849 = 7029^2 + 7957^2 .

It is a super-2 number, since 2×112720690² = 25411907908152200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (112720691) 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, 14877 + ... + 21136.

Almost surely, 2^112720690 is an apocalyptic number.

112720690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

112720690 is a deficient number, since it is larger than the sum of its proper divisors (90830438).

112720690 is a wasteful number, since it uses less digits than its factorization.

112720690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36333.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 112720690 is about 10617.0000470943. Note that the first 4 decimals coincide. The cubic root of 112720690 is about 483.0601510817.

The spelling of 112720690 in words is "one hundred twelve million, seven hundred twenty thousand, six hundred ninety".