28428926 has 4 divisors (see below), whose sum is σ = 42643392. Its totient is φ = 14214462.

The previous prime is 28428923. The next prime is 28428929. The reversal of 28428926 is 62982482.

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

It is an interprime number because it is at equal distance from previous prime (28428923) and next prime (28428929).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28428923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7107230 + ... + 7107233.

It is an arithmetic number, because the mean of its divisors is an integer number (10660848).

Almost surely, 2^28428926 is an apocalyptic number.

28428926 is a deficient number, since it is larger than the sum of its proper divisors (14214466).

28428926 is a wasteful number, since it uses less digits than its factorization.

28428926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14214465.

The product of its digits is 110592, while the sum is 41.

The square root of 28428926 is about 5331.8782806812. The cubic root of 28428926 is about 305.2016081729.

The spelling of 28428926 in words is "twenty-eight million, four hundred twenty-eight thousand, nine hundred twenty-six".