82750000 has 70 divisors (see below), whose sum is σ = 201013052. Its totient is φ = 33000000.

The previous prime is 82749991. The next prime is 82750009. The reversal of 82750000 is 5728.

It is an interprime number because it is at equal distance from previous prime (82749991) and next prime (82750009).

It is not an unprimeable number, because it can be changed into a prime (82750009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 249835 + ... + 250165.

Almost surely, 2^82750000 is an apocalyptic number.

82750000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82750000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100506526).

82750000 is an abundant number, since it is smaller than the sum of its proper divisors (118263052).

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

82750000 is an frugal number, since it uses more digits than its factorization.

82750000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 82750000 is about 9096.7026993301. The cubic root of 82750000 is about 435.7686677877.

Adding to 82750000 its reverse (5728), we get a palindrome (82755728).

The spelling of 82750000 in words is "eighty-two million, seven hundred fifty thousand".