83380780 has 24 divisors (see below), whose sum is σ = 200114208. Its totient is φ = 28587648.

The previous prime is 83380777. The next prime is 83380783. The reversal of 83380780 is 8708338.

It is an interprime number because it is at equal distance from previous prime (83380777) and next prime (83380783).

It is not an unprimeable number, because it can be changed into a prime (83380783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297649 + ... + 297928.

It is an arithmetic number, because the mean of its divisors is an integer number (8338092).

Almost surely, 2^83380780 is an apocalyptic number.

It is an amenable number.

83380780 is an abundant number, since it is smaller than the sum of its proper divisors (116733428).

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

83380780 is a wasteful number, since it uses less digits than its factorization.

83380780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595593 (or 595591 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 83380780 is about 9131.3076829116. The cubic root of 83380780 is about 436.8731136026.

The spelling of 83380780 in words is "eighty-three million, three hundred eighty thousand, seven hundred eighty".