28949330 has 16 divisors (see below), whose sum is σ = 52228800. Its totient is φ = 11553072.

The previous prime is 28949329. The next prime is 28949377. The reversal of 28949330 is 3394982.

It is a super-4 number, since 4×28949330⁴ (a number of 31 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1571 + ... + 7769.

It is an arithmetic number, because the mean of its divisors is an integer number (3264300).

Almost surely, 2^28949330 is an apocalyptic number.

28949330 is a deficient number, since it is larger than the sum of its proper divisors (23279470).

28949330 is a wasteful number, since it uses less digits than its factorization.

28949330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6673.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 28949330 is about 5380.4581589303. The cubic root of 28949330 is about 307.0526422829.

The spelling of 28949330 in words is "twenty-eight million, nine hundred forty-nine thousand, three hundred thirty".