28434336 has 192 divisors, whose sum is σ = 95800320. Its totient is φ = 7188480.

The previous prime is 28434323. The next prime is 28434337. The reversal of 28434336 is 63343482.

It is a super-2 number, since 2×28434336² = 1617022927521792, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 28434297 and 28434306.

It is not an unprimeable number, because it can be changed into a prime (28434337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216991 + ... + 217121.

It is an arithmetic number, because the mean of its divisors is an integer number (498960).

Almost surely, 2^28434336 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 28434336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47900160).

28434336 is an abundant number, since it is smaller than the sum of its proper divisors (67365984).

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

28434336 is a wasteful number, since it uses less digits than its factorization.

28434336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 179 counting only the distinct ones).

The product of its digits is 41472, while the sum is 33.

The square root of 28434336 is about 5332.3855824574. The cubic root of 28434336 is about 305.2209668122.

The spelling of 28434336 in words is "twenty-eight million, four hundred thirty-four thousand, three hundred thirty-six".