103556820 has 24 divisors (see below), whose sum is σ = 289959264. Its totient is φ = 27615136.

The previous prime is 103556819. The next prime is 103556861. The reversal of 103556820 is 28655301.

It is a super-3 number, since 3×103556820³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862914 + ... + 863033.

It is an arithmetic number, because the mean of its divisors is an integer number (12081636).

Almost surely, 2^103556820 is an apocalyptic number.

103556820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103556820 is an abundant number, since it is smaller than the sum of its proper divisors (186402444).

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

103556820 is a wasteful number, since it uses less digits than its factorization.

103556820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725959 (or 1725957 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 103556820 is about 10176.2871421752. The cubic root of 103556820 is about 469.5979963773.

The spelling of 103556820 in words is "one hundred three million, five hundred fifty-six thousand, eight hundred twenty".