28454870 has 16 divisors (see below), whose sum is σ = 51435648. Its totient is φ = 11333760.

The previous prime is 28454857. The next prime is 28454879. The reversal of 28454870 is 7845482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28454879) 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, 3494 + ... + 8313.

It is an arithmetic number, because the mean of its divisors is an integer number (3214728).

Almost surely, 2^28454870 is an apocalyptic number.

28454870 is a deficient number, since it is larger than the sum of its proper divisors (22980778).

28454870 is a wasteful number, since it uses less digits than its factorization.

28454870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12055.

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 28454870 is about 5334.3106396235. The cubic root of 28454870 is about 305.2944214231.

The spelling of 28454870 in words is "twenty-eight million, four hundred fifty-four thousand, eight hundred seventy".