28153412 has 24 divisors (see below), whose sum is σ = 56839104. Its totient is φ = 11951712.

The previous prime is 28153409. The next prime is 28153427. The reversal of 28153412 is 21435182.

It is a super-2 number, since 2×28153412² = 1585229214483488, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1703 + ... + 7694.

It is an arithmetic number, because the mean of its divisors is an integer number (2368296).

Almost surely, 2^28153412 is an apocalyptic number.

It is an amenable number.

28153412 is an abundant number, since it is smaller than the sum of its proper divisors (28685692).

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

28153412 is a wasteful number, since it uses less digits than its factorization.

28153412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9515 (or 9513 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 28153412 is about 5305.9788917786. The cubic root of 28153412 is about 304.2124697730.

Adding to 28153412 its reverse (21435182), we get a palindrome (49588594).

The spelling of 28153412 in words is "twenty-eight million, one hundred fifty-three thousand, four hundred twelve".