28951430 has 16 divisors (see below), whose sum is σ = 52303104. Its totient is φ = 11538240.

The previous prime is 28951423. The next prime is 28951463. The reversal of 28951430 is 3415982.

It is a congruent number.

It is an unprimeable number.

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, 2342 + ... + 7961.

It is an arithmetic number, because the mean of its divisors is an integer number (3268944).

Almost surely, 2^28951430 is an apocalyptic number.

28951430 is a deficient number, since it is larger than the sum of its proper divisors (23351674).

28951430 is a wasteful number, since it uses less digits than its factorization.

28951430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10591.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 28951430 is about 5380.6533060587. The cubic root of 28951430 is about 307.0600666915.

The spelling of 28951430 in words is "twenty-eight million, nine hundred fifty-one thousand, four hundred thirty".