112720278 has 64 divisors (see below), whose sum is σ = 260904960. Its totient is φ = 32140800.

The previous prime is 112720277. The next prime is 112720291. The reversal of 112720278 is 872027211.

It is a happy number.

It is a super-2 number, since 2×112720278² = 25411722144794568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112720273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74958 + ... + 76446.

It is an arithmetic number, because the mean of its divisors is an integer number (4076640).

Almost surely, 2^112720278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 112720278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130452480).

112720278 is an abundant number, since it is smaller than the sum of its proper divisors (148184682).

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

112720278 is a wasteful number, since it uses less digits than its factorization.

112720278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 112720278 is about 10616.9806442321. The cubic root of 112720278 is about 483.0595625443.

Adding to 112720278 its reverse (872027211), we get a palindrome (984747489).

The spelling of 112720278 in words is "one hundred twelve million, seven hundred twenty thousand, two hundred seventy-eight".