28719053 has 4 divisors (see below), whose sum is σ = 31329888. Its totient is φ = 26108220.

The previous prime is 28719037. The next prime is 28719059. The reversal of 28719053 is 35091782.

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 28719053 - 2⁴ = 28719037 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 (28719059) 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, 1305401 + ... + 1305422.

It is an arithmetic number, because the mean of its divisors is an integer number (7832472).

Almost surely, 2^28719053 is an apocalyptic number.

It is an amenable number.

28719053 is a deficient number, since it is larger than the sum of its proper divisors (2610835).

28719053 is a wasteful number, since it uses less digits than its factorization.

28719053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610834.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 28719053 is about 5359.0160477461. The cubic root of 28719053 is about 306.2363254758.

The spelling of 28719053 in words is "twenty-eight million, seven hundred nineteen thousand, fifty-three".