28845470 has 8 divisors (see below), whose sum is σ = 51921864. Its totient is φ = 11538184.

The previous prime is 28845463. The next prime is 28845491. The reversal of 28845470 is 7454882.

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

It is a super-2 number, since 2×28845470² = 1664122279041800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1442264 + ... + 1442283.

It is an arithmetic number, because the mean of its divisors is an integer number (6490233).

Almost surely, 2^28845470 is an apocalyptic number.

28845470 is a deficient number, since it is larger than the sum of its proper divisors (23076394).

28845470 is a wasteful number, since it uses less digits than its factorization.

28845470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2884554.

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

The square root of 28845470 is about 5370.7978923061. The cubic root of 28845470 is about 306.6850033669.

The spelling of 28845470 in words is "twenty-eight million, eight hundred forty-five thousand, four hundred seventy".