28345354 has 16 divisors (see below), whose sum is σ = 44818920. Its totient is φ = 13424320.

The previous prime is 28345349. The next prime is 28345357. The reversal of 28345354 is 45354382.

It can be written as a sum of positive squares in 4 ways, for example, as 28334329 + 11025 = 5323^2 + 105^2 .

It is not an unprimeable number, because it can be changed into a prime (28345357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1537 + ... + 7684.

Almost surely, 2^28345354 is an apocalyptic number.

28345354 is a deficient number, since it is larger than the sum of its proper divisors (16473566).

28345354 is a wasteful number, since it uses less digits than its factorization.

28345354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9305.

The product of its digits is 57600, while the sum is 34.

The square root of 28345354 is about 5324.0354995060. The cubic root of 28345354 is about 304.9022494238.

Subtracting 28345354 from its reverse (45354382), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 28345354 in words is "twenty-eight million, three hundred forty-five thousand, three hundred fifty-four".