84212280 has 48 divisors (see below), whose sum is σ = 273691080. Its totient is φ = 22456512.

The previous prime is 84212279. The next prime is 84212287. The reversal of 84212280 is 8221248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84212287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116602 + ... + 117321.

Almost surely, 2^84212280 is an apocalyptic number.

It is an amenable number.

84212280 is an abundant number, since it is smaller than the sum of its proper divisors (189478800).

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

84212280 is a wasteful number, since it uses less digits than its factorization.

84212280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233940 (or 233933 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 84212280 is about 9176.7249059782. The cubic root of 84212280 is about 438.3205260016.

It can be divided in two parts, 8421 and 2280, that added together give a palindrome (10701).

The spelling of 84212280 in words is "eighty-four million, two hundred twelve thousand, two hundred eighty".