28624673 has 24 divisors (see below), whose sum is σ = 37920960. Its totient is φ = 21325920.

The previous prime is 28624669. The next prime is 28624681. The reversal of 28624673 is 37642682.

It is not a de Polignac number, because 28624673 - 2² = 28624669 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28624663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11243 + ... + 13551.

It is an arithmetic number, because the mean of its divisors is an integer number (1580040).

Almost surely, 2^28624673 is an apocalyptic number.

28624673 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28624673 is a deficient number, since it is larger than the sum of its proper divisors (9296287).

28624673 is a wasteful number, since it uses less digits than its factorization.

28624673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357 (or 2350 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 28624673 is about 5350.2030802578. The cubic root of 28624673 is about 305.9004937966.

Subtracting 28624673 from its reverse (37642682), we obtain a square (9018009 = 3003²).

The spelling of 28624673 in words is "twenty-eight million, six hundred twenty-four thousand, six hundred seventy-three".