28265407 has 8 divisors (see below), whose sum is σ = 31503600. Its totient is φ = 25202304.

The previous prime is 28265389. The next prime is 28265423. The reversal of 28265407 is 70456282.

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

It is a cyclic number.

It is not a de Polignac number, because 28265407 - 2¹¹ = 28263359 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 (28265467) 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, 43432 + ... + 44077.

It is an arithmetic number, because the mean of its divisors is an integer number (3937950).

Almost surely, 2^28265407 is an apocalyptic number.

28265407 is a deficient number, since it is larger than the sum of its proper divisors (3238193).

28265407 is a wasteful number, since it uses less digits than its factorization.

28265407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87545.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 28265407 is about 5316.5220774488. The cubic root of 28265407 is about 304.6153244093.

The spelling of 28265407 in words is "twenty-eight million, two hundred sixty-five thousand, four hundred seven".