82530690 has 64 divisors (see below), whose sum is σ = 216950400. Its totient is φ = 19927040.

The previous prime is 82530689. The next prime is 82530703. The reversal of 82530690 is 9603528.

It is a happy number.

It is a super-2 number, since 2×82530690² = 13622629583752200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147892 + ... + 148448.

It is an arithmetic number, because the mean of its divisors is an integer number (3389850).

Almost surely, 2^82530690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82530690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108475200).

82530690 is an abundant number, since it is smaller than the sum of its proper divisors (134419710).

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

82530690 is a wasteful number, since it uses less digits than its factorization.

82530690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 82530690 is about 9084.6403341024. The cubic root of 82530690 is about 435.3833587101.

The spelling of 82530690 in words is "eighty-two million, five hundred thirty thousand, six hundred ninety".