55628436 has 12 divisors (see below), whose sum is σ = 129799712. Its totient is φ = 18542808.

The previous prime is 55628423. The next prime is 55628449. The reversal of 55628436 is 63482655.

It is an interprime number because it is at equal distance from previous prime (55628423) and next prime (55628449).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 55628394 and 55628403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2317840 + ... + 2317863.

Almost surely, 2^55628436 is an apocalyptic number.

It is an amenable number.

55628436 is an abundant number, since it is smaller than the sum of its proper divisors (74171276).

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

55628436 is a wasteful number, since it uses less digits than its factorization.

55628436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4635710 (or 4635708 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The square root of 55628436 is about 7458.4472914944. The cubic root of 55628436 is about 381.7381958405.

The spelling of 55628436 in words is "fifty-five million, six hundred twenty-eight thousand, four hundred thirty-six".