28501367 has 4 divisors (see below), whose sum is σ = 30177936. Its totient is φ = 26824800.

The previous prime is 28501351. The next prime is 28501373. The reversal of 28501367 is 76310582.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76310582 = 2 ⋅38155291.

It is a cyclic number.

It is not a de Polignac number, because 28501367 - 2⁴ = 28501351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28501327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838259 + ... + 838292.

It is an arithmetic number, because the mean of its divisors is an integer number (7544484).

Almost surely, 2^28501367 is an apocalyptic number.

28501367 is a deficient number, since it is larger than the sum of its proper divisors (1676569).

28501367 is a wasteful number, since it uses less digits than its factorization.

28501367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676568.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 28501367 is about 5338.6671557609. The cubic root of 28501367 is about 305.4606208556.

The spelling of 28501367 in words is "twenty-eight million, five hundred one thousand, three hundred sixty-seven".