28461906 has 48 divisors (see below), whose sum is σ = 69458688. Its totient is φ = 8344800.

The previous prime is 28461899. The next prime is 28461907. The reversal of 28461906 is 60916482.

It is not an unprimeable number, because it can be changed into a prime (28461907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3820 + ... + 8456.

It is an arithmetic number, because the mean of its divisors is an integer number (1447056).

Almost surely, 2^28461906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28461906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34729344).

28461906 is an abundant number, since it is smaller than the sum of its proper divisors (40996782).

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

28461906 is a wasteful number, since it uses less digits than its factorization.

28461906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4687 (or 4684 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 28461906 is about 5334.9701030090. The cubic root of 28461906 is about 305.3195826055.

The spelling of 28461906 in words is "twenty-eight million, four hundred sixty-one thousand, nine hundred six".