84215030 has 16 divisors (see below), whose sum is σ = 159565680. Its totient is φ = 31912992.

The previous prime is 84214993. The next prime is 84215069. The reversal of 84215030 is 3051248.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 84214987 and 84215005.

It is a congruent number.

It is an unprimeable number.

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, 221429 + ... + 221808.

It is an arithmetic number, because the mean of its divisors is an integer number (9972855).

Almost surely, 2^84215030 is an apocalyptic number.

84215030 is a deficient number, since it is larger than the sum of its proper divisors (75350650).

84215030 is a wasteful number, since it uses less digits than its factorization.

84215030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443263.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 84215030 is about 9176.8747403460. The cubic root of 84215030 is about 438.3252971519.

Adding to 84215030 its reverse (3051248), we get a palindrome (87266278).

The spelling of 84215030 in words is "eighty-four million, two hundred fifteen thousand, thirty".