28167445 has 8 divisors (see below), whose sum is σ = 33962400. Its totient is φ = 22426320.

The previous prime is 28167427. The next prime is 28167449. The reversal of 28167445 is 54476182.

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

It is a de Polignac number, because none of the positive numbers 2^k-28167445 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28167449) 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, 12295 + ... + 14404.

It is an arithmetic number, because the mean of its divisors is an integer number (4245300).

Almost surely, 2^28167445 is an apocalyptic number.

It is an amenable number.

28167445 is a deficient number, since it is larger than the sum of its proper divisors (5794955).

28167445 is a wasteful number, since it uses less digits than its factorization.

28167445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26915.

The product of its digits is 53760, while the sum is 37.

The square root of 28167445 is about 5307.3011031974. The cubic root of 28167445 is about 304.2630060335.

The spelling of 28167445 in words is "twenty-eight million, one hundred sixty-seven thousand, four hundred forty-five".