102782380 has 24 divisors (see below), whose sum is σ = 223287120. Its totient is φ = 39695040.

The previous prime is 102782371. The next prime is 102782389. The reversal of 102782380 is 83287201.

It is an interprime number because it is at equal distance from previous prime (102782371) and next prime (102782389).

It is not an unprimeable number, because it can be changed into a prime (102782389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88026 + ... + 89185.

It is an arithmetic number, because the mean of its divisors is an integer number (9303630).

Almost surely, 2^102782380 is an apocalyptic number.

102782380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102782380 is an abundant number, since it is smaller than the sum of its proper divisors (120504740).

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

102782380 is a wasteful number, since it uses less digits than its factorization.

102782380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177249 (or 177247 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 102782380 is about 10138.1645281579. The cubic root of 102782380 is about 468.4244511721.

The spelling of 102782380 in words is "one hundred two million, seven hundred eighty-two thousand, three hundred eighty".