28071455 has 16 divisors (see below), whose sum is σ = 36218880. Its totient is φ = 20819232.

The previous prime is 28071413. The next prime is 28071469. The reversal of 28071455 is 55417082.

It is a cyclic number.

It is not a de Polignac number, because 28071455 - 2¹² = 28067359 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1322 + ... + 7608.

It is an arithmetic number, because the mean of its divisors is an integer number (2263680).

Almost surely, 2^28071455 is an apocalyptic number.

28071455 is a deficient number, since it is larger than the sum of its proper divisors (8147425).

28071455 is a wasteful number, since it uses less digits than its factorization.

28071455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6358.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 28071455 is about 5298.2501828434. The cubic root of 28071455 is about 303.9169866538.

The spelling of 28071455 in words is "twenty-eight million, seventy-one thousand, four hundred fifty-five".