28167390 has 24 divisors (see below), whose sum is σ = 73235448. Its totient is φ = 7511280.

The previous prime is 28167383. The next prime is 28167427. The reversal of 28167390 is 9376182.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156396 + ... + 156575.

It is an arithmetic number, because the mean of its divisors is an integer number (3051477).

Almost surely, 2^28167390 is an apocalyptic number.

28167390 is an abundant number, since it is smaller than the sum of its proper divisors (45068058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28167390 is a wasteful number, since it uses less digits than its factorization.

28167390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312984 (or 312981 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 28167390 is about 5307.2959216535. The cubic root of 28167390 is about 304.2628079979.

The spelling of 28167390 in words is "twenty-eight million, one hundred sixty-seven thousand, three hundred ninety".