28623995 has 4 divisors (see below), whose sum is σ = 34348800. Its totient is φ = 22899192.

The previous prime is 28623989. The next prime is 28623997. The reversal of 28623995 is 59932682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28623995 - 2⁴ = 28623979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28623997) 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, 2862395 + ... + 2862404.

It is an arithmetic number, because the mean of its divisors is an integer number (8587200).

Almost surely, 2^28623995 is an apocalyptic number.

28623995 is a deficient number, since it is larger than the sum of its proper divisors (5724805).

28623995 is an equidigital number, since it uses as much as digits as its factorization.

28623995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5724804.

The product of its digits is 233280, while the sum is 44.

The square root of 28623995 is about 5350.1397178018. The cubic root of 28623995 is about 305.8980786055.

The spelling of 28623995 in words is "twenty-eight million, six hundred twenty-three thousand, nine hundred ninety-five".