53821628 has 24 divisors (see below), whose sum is σ = 107809632. Its totient is φ = 23030784.

The previous prime is 53821613. The next prime is 53821657. The reversal of 53821628 is 82612835.

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, 25676 + ... + 27692.

It is an arithmetic number, because the mean of its divisors is an integer number (4492068).

Almost surely, 2^53821628 is an apocalyptic number.

It is an amenable number.

53821628 is an abundant number, since it is smaller than the sum of its proper divisors (53988004).

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

53821628 is a wasteful number, since it uses less digits than its factorization.

53821628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2981 (or 2979 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 53821628 is about 7336.3225119947. The cubic root of 53821628 is about 377.5596806364.

The spelling of 53821628 in words is "fifty-three million, eight hundred twenty-one thousand, six hundred twenty-eight".