28949370 has 32 divisors (see below), whose sum is σ = 69723072. Its totient is φ = 7692672.

The previous prime is 28949329. The next prime is 28949377. The reversal of 28949370 is 7394982.

It is not an unprimeable number, because it can be changed into a prime (28949377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7849 + ... + 10931.

It is an arithmetic number, because the mean of its divisors is an integer number (2178846).

Almost surely, 2^28949370 is an apocalyptic number.

28949370 is an abundant number, since it is smaller than the sum of its proper divisors (40773702).

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

28949370 is a wasteful number, since it uses less digits than its factorization.

28949370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3406.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 28949370 is about 5380.4618760846. The cubic root of 28949370 is about 307.0527837036.

The spelling of 28949370 in words is "twenty-eight million, nine hundred forty-nine thousand, three hundred seventy".