84722000 has 80 divisors (see below), whose sum is σ = 223539264. Its totient is φ = 30800000.

The previous prime is 84721991. The next prime is 84722009. The reversal of 84722000 is 22748.

It is an interprime number because it is at equal distance from previous prime (84721991) and next prime (84722009).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84722009) 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, 20075 + ... + 23925.

Almost surely, 2^84722000 is an apocalyptic number.

84722000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84722000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111769632).

84722000 is an abundant number, since it is smaller than the sum of its proper divisors (138817264).

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

84722000 is a wasteful number, since it uses less digits than its factorization.

84722000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3885 (or 3869 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 84722000 is about 9204.4554428820. The cubic root of 84722000 is about 439.2031030423.

Adding to 84722000 its reverse (22748), we get a palindrome (84744748).

The spelling of 84722000 in words is "eighty-four million, seven hundred twenty-two thousand".