28490446 has 4 divisors (see below), whose sum is σ = 42735672. Its totient is φ = 14245222.

The previous prime is 28490437. The next prime is 28490447. The reversal of 28490446 is 64409482.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28490447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7122610 + ... + 7122613.

It is an arithmetic number, because the mean of its divisors is an integer number (10683918).

Almost surely, 2^28490446 is an apocalyptic number.

28490446 is a deficient number, since it is larger than the sum of its proper divisors (14245226).

28490446 is a wasteful number, since it uses less digits than its factorization.

28490446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14245225.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 28490446 is about 5337.6442369270. The cubic root of 28490446 is about 305.4216009539.

The spelling of 28490446 in words is "twenty-eight million, four hundred ninety thousand, four hundred forty-six".