71778468 has 12 divisors (see below), whose sum is σ = 167483120. Its totient is φ = 23926152.

The previous prime is 71778467. The next prime is 71778503. The reversal of 71778468 is 86487717.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (71778467) 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, 2990758 + ... + 2990781.

Almost surely, 2^71778468 is an apocalyptic number.

It is an amenable number.

71778468 is an abundant number, since it is smaller than the sum of its proper divisors (95704652).

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

71778468 is a wasteful number, since it uses less digits than its factorization.

71778468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5981546 (or 5981544 counting only the distinct ones).

The product of its digits is 526848, while the sum is 48.

The square root of 71778468 is about 8472.2174193065. The cubic root of 71778468 is about 415.5896548457.

The spelling of 71778468 in words is "seventy-one million, seven hundred seventy-eight thousand, four hundred sixty-eight".