28943946 has 16 divisors (see below), whose sum is σ = 64320000. Its totient is φ = 9647964.

The previous prime is 28943903. The next prime is 28943947. The reversal of 28943946 is 64934982.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28943947) 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 7 ways as a sum of consecutive naturals, for example, 267946 + ... + 268053.

It is an arithmetic number, because the mean of its divisors is an integer number (4020000).

Almost surely, 2^28943946 is an apocalyptic number.

28943946 is an abundant number, since it is smaller than the sum of its proper divisors (35376054).

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

28943946 is a wasteful number, since it uses less digits than its factorization.

28943946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536010 (or 536004 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 28943946 is about 5379.9578065260. The cubic root of 28943946 is about 307.0336058732.

The spelling of 28943946 in words is "twenty-eight million, nine hundred forty-three thousand, nine hundred forty-six".