28415412 has 36 divisors (see below), whose sum is σ = 75610080. Its totient is φ = 8973072.

The previous prime is 28415411. The next prime is 28415417. The reversal of 28415412 is 21451482.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28415411) 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 11 ways as a sum of consecutive naturals, for example, 20088 + ... + 21455.

It is an arithmetic number, because the mean of its divisors is an integer number (2100280).

Almost surely, 2^28415412 is an apocalyptic number.

It is an amenable number.

28415412 is an abundant number, since it is smaller than the sum of its proper divisors (47194668).

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

28415412 is a wasteful number, since it uses less digits than its factorization.

28415412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41572 (or 41567 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 28415412 is about 5330.6108467980. The cubic root of 28415412 is about 305.1532402037.

Adding to 28415412 its reverse (21451482), we get a palindrome (49866894).

The spelling of 28415412 in words is "twenty-eight million, four hundred fifteen thousand, four hundred twelve".