84280630 has 32 divisors (see below), whose sum is σ = 178974720. Its totient is φ = 27963360.

The previous prime is 84280613. The next prime is 84280631. The reversal of 84280630 is 3608248.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 84280592 and 84280601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84280631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17250 + ... + 21589.

It is an arithmetic number, because the mean of its divisors is an integer number (5592960).

Almost surely, 2^84280630 is an apocalyptic number.

84280630 is an abundant number, since it is smaller than the sum of its proper divisors (94694090).

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

84280630 is a wasteful number, since it uses less digits than its factorization.

84280630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38884.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 84280630 is about 9180.4482461370. The cubic root of 84280630 is about 438.4390799950.

Adding to 84280630 its reverse (3608248), we get a palindrome (87888878).

The spelling of 84280630 in words is "eighty-four million, two hundred eighty thousand, six hundred thirty".