53704040 has 64 divisors (see below), whose sum is σ = 131241600. Its totient is φ = 19660032.

The previous prime is 53704039. The next prime is 53704067. The reversal of 53704040 is 4040735.

It is a junction number, because it is equal to n+sod(n) for n = 53703997 and 53704015.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71909 + ... + 72651.

It is an arithmetic number, because the mean of its divisors is an integer number (2050650).

Almost surely, 2^53704040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53704040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65620800).

53704040 is an abundant number, since it is smaller than the sum of its proper divisors (77537560).

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

53704040 is a wasteful number, since it uses less digits than its factorization.

53704040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906 (or 902 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 53704040 is about 7328.3040329943. The cubic root of 53704040 is about 377.2845195116.

Adding to 53704040 its reverse (4040735), we get a palindrome (57744775).

The spelling of 53704040 in words is "fifty-three million, seven hundred four thousand, forty".