53856940 has 24 divisors (see below), whose sum is σ = 113919120. Its totient is φ = 21386688.

The previous prime is 53856931. The next prime is 53856947. The reversal of 53856940 is 4965835.

It is a junction number, because it is equal to n+sod(n) for n = 53856893 and 53856902.

It is not an unprimeable number, because it can be changed into a prime (53856947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6907 + ... + 12466.

It is an arithmetic number, because the mean of its divisors is an integer number (4746630).

Almost surely, 2^53856940 is an apocalyptic number.

It is an amenable number.

53856940 is an abundant number, since it is smaller than the sum of its proper divisors (60062180).

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

53856940 is a wasteful number, since it uses less digits than its factorization.

53856940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19521 (or 19519 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 53856940 is about 7338.7287727508. The cubic root of 53856940 is about 377.6422340215.

The spelling of 53856940 in words is "fifty-three million, eight hundred fifty-six thousand, nine hundred forty".