28077953 has 4 divisors (see below), whose sum is σ = 29555760. Its totient is φ = 26600148.

The previous prime is 28077949. The next prime is 28077961. The reversal of 28077953 is 35977082.

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 28077953 - 2² = 28077949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28077953.

It is not an unprimeable number, because it can be changed into a prime (28077253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738875 + ... + 738912.

It is an arithmetic number, because the mean of its divisors is an integer number (7388940).

Almost surely, 2^28077953 is an apocalyptic number.

It is an amenable number.

28077953 is a deficient number, since it is larger than the sum of its proper divisors (1477807).

28077953 is a wasteful number, since it uses less digits than its factorization.

28077953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477806.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 28077953 is about 5298.8633686858. The cubic root of 28077953 is about 303.9404351500.

The spelling of 28077953 in words is "twenty-eight million, seventy-seven thousand, nine hundred fifty-three".