28052346 has 64 divisors (see below), whose sum is σ = 68739840. Its totient is φ = 7449600.

The previous prime is 28052333. The next prime is 28052377. The reversal of 28052346 is 64325082.

It is a super-2 number, since 2×28052346² = 1573868232207432, which contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 71920 + ... + 72308.

It is an arithmetic number, because the mean of its divisors is an integer number (1074060).

Almost surely, 2^28052346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28052346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34369920).

28052346 is an abundant number, since it is smaller than the sum of its proper divisors (40687494).

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

28052346 is a wasteful number, since it uses less digits than its factorization.

28052346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 28052346 is about 5296.4465446184. The cubic root of 28052346 is about 303.8480094908.

It can be divided in two parts, 2805 and 2346, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 28052346 in words is "twenty-eight million, fifty-two thousand, three hundred forty-six".