80288778 has 8 divisors (see below), whose sum is σ = 160577568. Its totient is φ = 26762924.

The previous prime is 80288777. The next prime is 80288797. The reversal of 80288778 is 87788208.

It is a sphenic number, since it is the product of 3 distinct primes.

80288778 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (80288777) 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, 6690726 + ... + 6690737.

It is an arithmetic number, because the mean of its divisors is an integer number (20072196).

Almost surely, 2^80288778 is an apocalyptic number.

80288778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

80288778 is a wasteful number, since it uses less digits than its factorization.

80288778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13381468.

The product of its (nonzero) digits is 401408, while the sum is 48.

The square root of 80288778 is about 8960.4005490826. The cubic root of 80288778 is about 431.4047765378.

The spelling of 80288778 in words is "eighty million, two hundred eighty-eight thousand, seven hundred seventy-eight".