53780628 has 36 divisors (see below), whose sum is σ = 137936960. Its totient is φ = 16296720.

The previous prime is 53780557. The next prime is 53780641. The reversal of 53780628 is 82608735.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17068 + ... + 19971.

Almost surely, 2^53780628 is an apocalyptic number.

It is an amenable number.

53780628 is an abundant number, since it is smaller than the sum of its proper divisors (84156332).

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

53780628 is a wasteful number, since it uses less digits than its factorization.

53780628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37068 (or 37055 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 53780628 is about 7333.5276640918. The cubic root of 53780628 is about 377.4637843713.

The spelling of 53780628 in words is "fifty-three million, seven hundred eighty thousand, six hundred twenty-eight".