53680308 has 48 divisors (see below), whose sum is σ = 139237056. Its totient is φ = 15957760.

The previous prime is 53680307. The next prime is 53680327. The reversal of 53680308 is 80308635.

It is a super-3 number, since 3×53680308³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53680307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3160 + ... + 10832.

It is an arithmetic number, because the mean of its divisors is an integer number (2900772).

Almost surely, 2^53680308 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 53680308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69618528).

53680308 is an abundant number, since it is smaller than the sum of its proper divisors (85556748).

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

53680308 is a wasteful number, since it uses less digits than its factorization.

53680308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7744 (or 7742 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 53680308 is about 7326.6846526925. The cubic root of 53680308 is about 377.2289368811.

Adding to 53680308 its sum of digits (33), we get a triangular number (53680341 = T₁₀₃₆₁).

It can be divided in two parts, 53 and 680308, that added together give a triangular number (680361 = T₁₁₆₆).

The spelling of 53680308 in words is "fifty-three million, six hundred eighty thousand, three hundred eight".