83470420 has 72 divisors (see below), whose sum is σ = 202009248. Its totient is φ = 28728000.

The previous prime is 83470403. The next prime is 83470421. The reversal of 83470420 is 2407438.

It is a super-2 number, since 2×83470420² = 13934622029952800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83470421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78895 + ... + 79945.

It is an arithmetic number, because the mean of its divisors is an integer number (2805684).

Almost surely, 2^83470420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83470420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101004624).

83470420 is an abundant number, since it is smaller than the sum of its proper divisors (118538828).

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

83470420 is a wasteful number, since it uses less digits than its factorization.

83470420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109 (or 1088 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 83470420 is about 9136.2147522921. The cubic root of 83470420 is about 437.0296136201.

Adding to 83470420 its reverse (2407438), we get a palindrome (85877858).

The spelling of 83470420 in words is "eighty-three million, four hundred seventy thousand, four hundred twenty".