84422820 has 24 divisors (see below), whose sum is σ = 236384064. Its totient is φ = 22512736.

The previous prime is 84422809. The next prime is 84422839. The reversal of 84422820 is 2822448.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703464 + ... + 703583.

It is an arithmetic number, because the mean of its divisors is an integer number (9849336).

Almost surely, 2^84422820 is an apocalyptic number.

It is an amenable number.

84422820 is an abundant number, since it is smaller than the sum of its proper divisors (151961244).

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

84422820 is a wasteful number, since it uses less digits than its factorization.

84422820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407059 (or 1407057 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The square root of 84422820 is about 9188.1891578265. The cubic root of 84422820 is about 438.6855052479.

The spelling of 84422820 in words is "eighty-four million, four hundred twenty-two thousand, eight hundred twenty".