28767542 has 4 divisors (see below), whose sum is σ = 43151316. Its totient is φ = 14383770.

The previous prime is 28767511. The next prime is 28767547. The reversal of 28767542 is 24576782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24576782 = 2 ⋅12288391.

It is a self number, because there is not a number n which added to its sum of digits gives 28767542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28767547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7191884 + ... + 7191887.

It is an arithmetic number, because the mean of its divisors is an integer number (10787829).

Almost surely, 2^28767542 is an apocalyptic number.

28767542 is a deficient number, since it is larger than the sum of its proper divisors (14383774).

28767542 is a wasteful number, since it uses less digits than its factorization.

28767542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14383773.

The product of its digits is 188160, while the sum is 41.

The square root of 28767542 is about 5363.5381978690. The cubic root of 28767542 is about 306.4085774878.

The spelling of 28767542 in words is "twenty-eight million, seven hundred sixty-seven thousand, five hundred forty-two".