28472016 has 40 divisors (see below), whose sum is σ = 73950624. Its totient is φ = 9439360.

The previous prime is 28471987. The next prime is 28472021. The reversal of 28472016 is 61027482.

It is a congruent number.

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, 7951 + ... + 10961.

Almost surely, 2^28472016 is an apocalyptic number.

It is an amenable number.

28472016 is an abundant number, since it is smaller than the sum of its proper divisors (45478608).

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

28472016 is a wasteful number, since it uses less digits than its factorization.

28472016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3219 (or 3213 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 28472016 is about 5335.9175405922. The cubic root of 28472016 is about 305.3557293480.

Adding to 28472016 its reverse (61027482), we get a palindrome (89499498).

The spelling of 28472016 in words is "twenty-eight million, four hundred seventy-two thousand, sixteen".