53878636 has 36 divisors (see below), whose sum is σ = 113475600. Its totient is φ = 22292256.

The previous prime is 53878631. The next prime is 53878637. The reversal of 53878636 is 63687835.

53878636 = T₉₉ + T₁₀₀ + ... + T₆₈₆.

It is not an unprimeable number, because it can be changed into a prime (53878631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 945 + ... + 10423.

It is an arithmetic number, because the mean of its divisors is an integer number (3152100).

Almost surely, 2^53878636 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 53878636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56737800).

53878636 is an abundant number, since it is smaller than the sum of its proper divisors (59596964).

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

53878636 is a wasteful number, since it uses less digits than its factorization.

53878636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9526 (or 9517 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The square root of 53878636 is about 7340.2068090756. The cubic root of 53878636 is about 377.6929376444.

The spelling of 53878636 in words is "fifty-three million, eight hundred seventy-eight thousand, six hundred thirty-six".