80480778 has 32 divisors (see below), whose sum is σ = 188238336. Its totient is φ = 22459248.

The previous prime is 80480773. The next prime is 80480819. The reversal of 80480778 is 87708408.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (80480773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20476 + ... + 24087.

It is an arithmetic number, because the mean of its divisors is an integer number (5882448).

Almost surely, 2^80480778 is an apocalyptic number.

80480778 is an abundant number, since it is smaller than the sum of its proper divisors (107757558).

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

80480778 is a wasteful number, since it uses less digits than its factorization.

80480778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44618.

The product of its (nonzero) digits is 100352, while the sum is 42.

The square root of 80480778 is about 8971.1079583293. The cubic root of 80480778 is about 431.7483852849.

The spelling of 80480778 in words is "eighty million, four hundred eighty thousand, seven hundred seventy-eight".