28953390 has 16 divisors (see below), whose sum is σ = 69488208. Its totient is φ = 7720896.

The previous prime is 28953383. The next prime is 28953409. The reversal of 28953390 is 9335982.

It is a congruent number.

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, 482527 + ... + 482586.

It is an arithmetic number, because the mean of its divisors is an integer number (4343013).

Almost surely, 2^28953390 is an apocalyptic number.

28953390 is an abundant number, since it is smaller than the sum of its proper divisors (40534818).

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

28953390 is a wasteful number, since it uses less digits than its factorization.

28953390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965123.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 28953390 is about 5380.8354369930. The cubic root of 28953390 is about 307.0669958155.

The spelling of 28953390 in words is "twenty-eight million, nine hundred fifty-three thousand, three hundred ninety".