53406428 has 12 divisors (see below), whose sum is σ = 96476352. Its totient is φ = 25841760.

The previous prime is 53406407. The next prime is 53406439. The reversal of 53406428 is 82460435.

It is a junction number, because it is equal to n+sod(n) for n = 53406394 and 53406403.

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, 215225 + ... + 215472.

It is an arithmetic number, because the mean of its divisors is an integer number (8039696).

Almost surely, 2^53406428 is an apocalyptic number.

It is an amenable number.

53406428 is a deficient number, since it is larger than the sum of its proper divisors (43069924).

53406428 is a wasteful number, since it uses less digits than its factorization.

53406428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430732 (or 430730 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 53406428 is about 7307.9701696162. The cubic root of 53406428 is about 376.5862948400.

The spelling of 53406428 in words is "fifty-three million, four hundred six thousand, four hundred twenty-eight".