68502240 has 192 divisors, whose sum is σ = 243673920. Its totient is φ = 17971200.

The previous prime is 68502229. The next prime is 68502253. The reversal of 68502240 is 4220586.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 436242 + ... + 436398.

It is an arithmetic number, because the mean of its divisors is an integer number (1269135).

Almost surely, 2^68502240 is an apocalyptic number.

68502240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68502240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121836960).

68502240 is an abundant number, since it is smaller than the sum of its proper divisors (175171680).

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

68502240 is a wasteful number, since it uses less digits than its factorization.

68502240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 68502240 is about 8276.6080008661. The cubic root of 68502240 is about 409.1679337795.

The spelling of 68502240 in words is "sixty-eight million, five hundred two thousand, two hundred forty".