28937573 has 4 divisors (see below), whose sum is σ = 33071520. Its totient is φ = 24803628.

The previous prime is 28937567. The next prime is 28937603. The reversal of 28937573 is 37573982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28937573 - 2¹⁶ = 28872037 is a prime.

It is a super-2 number, since 2×28937573² = 1674766262260658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28937543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2066963 + ... + 2066976.

It is an arithmetic number, because the mean of its divisors is an integer number (8267880).

Almost surely, 2^28937573 is an apocalyptic number.

It is an amenable number.

28937573 is a deficient number, since it is larger than the sum of its proper divisors (4133947).

28937573 is an equidigital number, since it uses as much as digits as its factorization.

28937573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4133946.

The product of its digits is 317520, while the sum is 44.

The square root of 28937573 is about 5379.3654830286. The cubic root of 28937573 is about 307.0110695680.

The spelling of 28937573 in words is "twenty-eight million, nine hundred thirty-seven thousand, five hundred seventy-three".