103720828 has 12 divisors (see below), whose sum is σ = 182133000. Its totient is φ = 51682832.

The previous prime is 103720819. The next prime is 103720873. The reversal of 103720828 is 828027301.

It is a super-2 number, since 2×103720828² = 21516020322011168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103720828.

It is a congruent number.

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, 43078 + ... + 45421.

It is an arithmetic number, because the mean of its divisors is an integer number (15177750).

Almost surely, 2^103720828 is an apocalyptic number.

It is an amenable number.

103720828 is a deficient number, since it is larger than the sum of its proper divisors (78412172).

103720828 is a wasteful number, since it uses less digits than its factorization.

103720828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88796 (or 88794 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 103720828 is about 10184.3422958972. The cubic root of 103720828 is about 469.8457740545.

The spelling of 103720828 in words is "one hundred three million, seven hundred twenty thousand, eight hundred twenty-eight".