28049652 has 30 divisors (see below), whose sum is σ = 73328178. Its totient is φ = 9349776.

The previous prime is 28049639. The next prime is 28049653. The reversal of 28049652 is 25694082.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18352656 + 9696996 = 4284^2 + 3114^2 .

It is a super-2 number, since 2×28049652² = 1573565954642208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28049653) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 42963 + ... + 43610.

Almost surely, 2^28049652 is an apocalyptic number.

It is an amenable number.

28049652 is an abundant number, since it is smaller than the sum of its proper divisors (45278526).

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

28049652 is a wasteful number, since it uses less digits than its factorization.

28049652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86589 (or 86578 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 28049652 is about 5296.1922170556. The cubic root of 28049652 is about 303.8382825236.

The spelling of 28049652 in words is "twenty-eight million, forty-nine thousand, six hundred fifty-two".