68311432 has 16 divisors (see below), whose sum is σ = 146381760. Its totient is φ = 29276304.

The previous prime is 68311421. The next prime is 68311433. The reversal of 68311432 is 23411386.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 68311432.

It is not an unprimeable number, because it can be changed into a prime (68311433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609868 + ... + 609979.

It is an arithmetic number, because the mean of its divisors is an integer number (9148860).

Almost surely, 2^68311432 is an apocalyptic number.

It is an amenable number.

68311432 is an abundant number, since it is smaller than the sum of its proper divisors (78070328).

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

68311432 is a wasteful number, since it uses less digits than its factorization.

68311432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219860 (or 1219856 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 68311432 is about 8265.0730184312. The cubic root of 68311432 is about 408.7876780101.

The spelling of 68311432 in words is "sixty-eight million, three hundred eleven thousand, four hundred thirty-two".