28403348 has 6 divisors (see below), whose sum is σ = 49705866. Its totient is φ = 14201672.

The previous prime is 28403339. The next prime is 28403359. The reversal of 28403348 is 84330482.

It can be written as a sum of positive squares in only one way, i.e., 28174864 + 228484 = 5308^2 + 478^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3550415 + ... + 3550422.

It is an arithmetic number, because the mean of its divisors is an integer number (8284311).

Almost surely, 2^28403348 is an apocalyptic number.

It is an amenable number.

28403348 is a deficient number, since it is larger than the sum of its proper divisors (21302518).

28403348 is a wasteful number, since it uses less digits than its factorization.

28403348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7100841 (or 7100839 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 28403348 is about 5329.4791490351. The cubic root of 28403348 is about 305.1100489736.

The spelling of 28403348 in words is "twenty-eight million, four hundred three thousand, three hundred forty-eight".