28058638 has 8 divisors (see below), whose sum is σ = 42110640. Its totient is φ = 14021760.

The previous prime is 28058629. The next prime is 28058647. The reversal of 28058638 is 83685082.

It is an interprime number because it is at equal distance from previous prime (28058629) and next prime (28058647).

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

It is a self number, because there is not a number n which added to its sum of digits gives 28058638.

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, 4398 + ... + 8686.

It is an arithmetic number, because the mean of its divisors is an integer number (5263830).

Almost surely, 2^28058638 is an apocalyptic number.

28058638 is a deficient number, since it is larger than the sum of its proper divisors (14052002).

28058638 is a wasteful number, since it uses less digits than its factorization.

28058638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7562.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 28058638 is about 5297.0404944648. The cubic root of 28058638 is about 303.8707249855.

The spelling of 28058638 in words is "twenty-eight million, fifty-eight thousand, six hundred thirty-eight".