28400354 has 16 divisors (see below), whose sum is σ = 44731008. Its totient is φ = 13497792.

The previous prime is 28400329. The next prime is 28400357. The reversal of 28400354 is 45300482.

It is not an unprimeable number, because it can be changed into a prime (28400357) by changing a digit.

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, 5834 + ... + 9530.

It is an arithmetic number, because the mean of its divisors is an integer number (2795688).

Almost surely, 2^28400354 is an apocalyptic number.

28400354 is a deficient number, since it is larger than the sum of its proper divisors (16330654).

28400354 is a wasteful number, since it uses less digits than its factorization.

28400354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3889.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 28400354 is about 5329.1982511444. The cubic root of 28400354 is about 305.0993280357.

The spelling of 28400354 in words is "twenty-eight million, four hundred thousand, three hundred fifty-four".