68152220 has 24 divisors (see below), whose sum is σ = 149343264. Its totient is φ = 26075456.

The previous prime is 68152219. The next prime is 68152277. The reversal of 68152220 is 2225186.

It is a self number, because there is not a number n which added to its sum of digits gives 68152220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73619 + ... + 74538.

It is an arithmetic number, because the mean of its divisors is an integer number (6222636).

Almost surely, 2^68152220 is an apocalyptic number.

It is an amenable number.

68152220 is an abundant number, since it is smaller than the sum of its proper divisors (81191044).

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

68152220 is a wasteful number, since it uses less digits than its factorization.

68152220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148189 (or 148187 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 68152220 is about 8255.4357849843. The cubic root of 68152220 is about 408.4698467156.

The spelling of 68152220 in words is "sixty-eight million, one hundred fifty-two thousand, two hundred twenty".