28783454 has 8 divisors (see below), whose sum is σ = 49343088. Its totient is φ = 12335760.

The previous prime is 28783427. The next prime is 28783463. The reversal of 28783454 is 45438782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1027967 + ... + 1027994.

It is an arithmetic number, because the mean of its divisors is an integer number (6167886).

Almost surely, 2^28783454 is an apocalyptic number.

28783454 is a deficient number, since it is larger than the sum of its proper divisors (20559634).

28783454 is a wasteful number, since it uses less digits than its factorization.

28783454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055970.

The product of its digits is 215040, while the sum is 41.

The square root of 28783454 is about 5365.0213419892. The cubic root of 28783454 is about 306.4650609908.

The spelling of 28783454 in words is "twenty-eight million, seven hundred eighty-three thousand, four hundred fifty-four".