28485077 has 4 divisors (see below), whose sum is σ = 28500576. Its totient is φ = 28469580.

The previous prime is 28485071. The next prime is 28485089. The reversal of 28485077 is 77058482.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28485077 - 2¹⁸ = 28222933 is a prime.

It is a super-2 number, since 2×28485077² = 1622799223391858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28485071) 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, 4553 + ... + 8814.

It is an arithmetic number, because the mean of its divisors is an integer number (7125144).

Almost surely, 2^28485077 is an apocalyptic number.

It is an amenable number.

28485077 is a deficient number, since it is larger than the sum of its proper divisors (15499).

28485077 is a wasteful number, since it uses less digits than its factorization.

28485077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15498.

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 28485077 is about 5337.1412760016. The cubic root of 28485077 is about 305.4024142695.

The spelling of 28485077 in words is "twenty-eight million, four hundred eighty-five thousand, seventy-seven".