107728420 has 12 divisors (see below), whose sum is σ = 226229724. Its totient is φ = 43091360.

The previous prime is 107728409. The next prime is 107728433. The reversal of 107728420 is 24827701.

It can be written as a sum of positive squares in 2 ways, for example, as 26440164 + 81288256 = 5142^2 + 9016^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2693191 + ... + 2693230.

It is an arithmetic number, because the mean of its divisors is an integer number (18852477).

Almost surely, 2^107728420 is an apocalyptic number.

107728420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

107728420 is an abundant number, since it is smaller than the sum of its proper divisors (118501304).

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

107728420 is a wasteful number, since it uses less digits than its factorization.

107728420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5386430 (or 5386428 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 107728420 is about 10379.2302219384. The cubic root of 107728420 is about 475.8208079599.

The spelling of 107728420 in words is "one hundred seven million, seven hundred twenty-eight thousand, four hundred twenty".