82412388 has 18 divisors (see below), whose sum is σ = 208320294. Its totient is φ = 27470784.

The previous prime is 82412387. The next prime is 82412423. The reversal of 82412388 is 88321428.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 82410084 + 2304 = 9078^2 + 48^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2289233 = 82412388 / (8 + 2 + 4 + 1 + 2 + 3 + 8 + 8).

It is not an unprimeable number, because it can be changed into a prime (82412383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1144581 + ... + 1144652.

Almost surely, 2^82412388 is an apocalyptic number.

It is an amenable number.

82412388 is an abundant number, since it is smaller than the sum of its proper divisors (125907906).

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

82412388 is a wasteful number, since it uses less digits than its factorization.

82412388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289243 (or 2289238 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 82412388 is about 9078.1268993113. The cubic root of 82412388 is about 435.1752286511.

The spelling of 82412388 in words is "eighty-two million, four hundred twelve thousand, three hundred eighty-eight".