28315527 has 8 divisors (see below), whose sum is σ = 37889520. Its totient is φ = 18809280.

The previous prime is 28315499. The next prime is 28315537. The reversal of 28315527 is 72551382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28315527 - 2²⁰ = 27266951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28315537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15952 + ... + 17637.

It is an arithmetic number, because the mean of its divisors is an integer number (4736190).

Almost surely, 2^28315527 is an apocalyptic number.

28315527 is a deficient number, since it is larger than the sum of its proper divisors (9573993).

28315527 is a wasteful number, since it uses less digits than its factorization.

28315527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33873.

The product of its digits is 16800, while the sum is 33.

The square root of 28315527 is about 5321.2335975787. The cubic root of 28315527 is about 304.7952652698.

The spelling of 28315527 in words is "twenty-eight million, three hundred fifteen thousand, five hundred twenty-seven".