28601573 has 16 divisors (see below), whose sum is σ = 38403456. Its totient is φ = 20571840.

The previous prime is 28601567. The next prime is 28601603. The reversal of 28601573 is 37510682.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28601573 - 2⁴ = 28601557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28601533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13286 + ... + 15287.

It is an arithmetic number, because the mean of its divisors is an integer number (2400216).

Almost surely, 2^28601573 is an apocalyptic number.

It is an amenable number.

28601573 is a deficient number, since it is larger than the sum of its proper divisors (9801883).

28601573 is a wasteful number, since it uses less digits than its factorization.

28601573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28604.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 28601573 is about 5348.0438479878. The cubic root of 28601573 is about 305.8181848146.

The spelling of 28601573 in words is "twenty-eight million, six hundred one thousand, five hundred seventy-three".