28480906 has 8 divisors (see below), whose sum is σ = 42841440. Its totient is φ = 14200428.

The previous prime is 28480901. The next prime is 28480927. The reversal of 28480906 is 60908482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28480906² = 1622324013161672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28480901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19116 + ... + 20551.

It is an arithmetic number, because the mean of its divisors is an integer number (5355180).

Almost surely, 2^28480906 is an apocalyptic number.

28480906 is a deficient number, since it is larger than the sum of its proper divisors (14360534).

28480906 is a wasteful number, since it uses less digits than its factorization.

28480906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40028.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 28480906 is about 5336.7505094392. The cubic root of 28480906 is about 305.3875070996.

The spelling of 28480906 in words is "twenty-eight million, four hundred eighty thousand, nine hundred six".