83480778 has 24 divisors (see below), whose sum is σ = 191515428. Its totient is φ = 26189952.

The previous prime is 83480773. The next prime is 83480807. The reversal of 83480778 is 87708438.

It can be written as a sum of positive squares in 2 ways, for example, as 70107129 + 13373649 = 8373^2 + 3657^2 .

It is not an unprimeable number, because it can be changed into a prime (83480773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136101 + ... + 136712.

Almost surely, 2^83480778 is an apocalyptic number.

83480778 is an abundant number, since it is smaller than the sum of its proper divisors (108034650).

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

83480778 is a wasteful number, since it uses less digits than its factorization.

83480778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272838 (or 272835 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 83480778 is about 9136.7815996663. The cubic root of 83480778 is about 437.0476901456.

The spelling of 83480778 in words is "eighty-three million, four hundred eighty thousand, seven hundred seventy-eight".