103644436 has 12 divisors (see below), whose sum is σ = 207288928. Its totient is φ = 44419032.

The previous prime is 103644419. The next prime is 103644467. The reversal of 103644436 is 634446301.

It is a happy number.

103644436 is an admirable number.

It is a super-2 number, since 2×103644436² = 21484338227516192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 103644398 and 103644407.

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, 1850766 + ... + 1850821.

Almost surely, 2^103644436 is an apocalyptic number.

It is an amenable number.

103644436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

103644436 is a wasteful number, since it uses less digits than its factorization.

103644436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701598 (or 3701596 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 103644436 is about 10180.5911419721. The cubic root of 103644436 is about 469.7303961551.

The spelling of 103644436 in words is "one hundred three million, six hundred forty-four thousand, four hundred thirty-six".