103205428 has 12 divisors (see below), whose sum is σ = 180706372. Its totient is φ = 51575040.

The previous prime is 103205413. The next prime is 103205483. The reversal of 103205428 is 824502301.

It can be written as a sum of positive squares in 2 ways, for example, as 52823824 + 50381604 = 7268^2 + 7098^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

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, 3076 + ... + 14692.

Almost surely, 2^103205428 is an apocalyptic number.

It is an amenable number.

103205428 is a deficient number, since it is larger than the sum of its proper divisors (77500944).

103205428 is a wasteful number, since it uses less digits than its factorization.

103205428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13842 (or 13840 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 103205428 is about 10159.0072349615. The cubic root of 103205428 is about 469.0662432970.

Adding to 103205428 its reverse (824502301), we get a palindrome (927707729).

The spelling of 103205428 in words is "one hundred three million, two hundred five thousand, four hundred twenty-eight".