53631428 has 12 divisors (see below), whose sum is σ = 93950892. Its totient is φ = 26788320.

The previous prime is 53631427. The next prime is 53631499. The reversal of 53631428 is 82413635.

It can be written as a sum of positive squares in 2 ways, for example, as 18679684 + 34951744 = 4322^2 + 5912^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53631394 and 53631403.

It is not an unprimeable number, because it can be changed into a prime (53631427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2075 + ... + 10562.

It is an arithmetic number, because the mean of its divisors is an integer number (7829241).

Almost surely, 2^53631428 is an apocalyptic number.

It is an amenable number.

53631428 is a deficient number, since it is larger than the sum of its proper divisors (40319464).

53631428 is a wasteful number, since it uses less digits than its factorization.

53631428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13702 (or 13700 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 53631428 is about 7323.3481413900. The cubic root of 53631428 is about 377.1144035718.

The spelling of 53631428 in words is "fifty-three million, six hundred thirty-one thousand, four hundred twenty-eight".