28437673 has 4 divisors (see below), whose sum is σ = 31022928. Its totient is φ = 25852420.

The previous prime is 28437671. The next prime is 28437727. The reversal of 28437673 is 37673482.

It is a happy number.

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 not a de Polignac number, because 28437673 - 2¹ = 28437671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28437671) 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, 1292611 + ... + 1292632.

It is an arithmetic number, because the mean of its divisors is an integer number (7755732).

Almost surely, 2^28437673 is an apocalyptic number.

It is an amenable number.

28437673 is a deficient number, since it is larger than the sum of its proper divisors (2585255).

28437673 is a wasteful number, since it uses less digits than its factorization.

28437673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585254.

The product of its digits is 169344, while the sum is 40.

The square root of 28437673 is about 5332.6984726309. The cubic root of 28437673 is about 305.2329063973.

The spelling of 28437673 in words is "twenty-eight million, four hundred thirty-seven thousand, six hundred seventy-three".