28061757 has 24 divisors (see below), whose sum is σ = 42213600. Its totient is φ = 17948448.

The previous prime is 28061749. The next prime is 28061767. The reversal of 28061757 is 75716082.

It is not a de Polignac number, because 28061757 - 2³ = 28061749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28061717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22219 + ... + 23447.

It is an arithmetic number, because the mean of its divisors is an integer number (1758900).

Almost surely, 2^28061757 is an apocalyptic number.

It is an amenable number.

28061757 is a deficient number, since it is larger than the sum of its proper divisors (14151843).

28061757 is a wasteful number, since it uses less digits than its factorization.

28061757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337 (or 1334 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 28061757 is about 5297.3348959642. The cubic root of 28061757 is about 303.8819839981.

The spelling of 28061757 in words is "twenty-eight million, sixty-one thousand, seven hundred fifty-seven".