28900430 has 16 divisors (see below), whose sum is σ = 56022624. Its totient is φ = 10670880.

The previous prime is 28900427. The next prime is 28900433. The reversal of 28900430 is 3400982.

It is an interprime number because it is at equal distance from previous prime (28900427) and next prime (28900433).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 28900430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28900433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111026 + ... + 111285.

It is an arithmetic number, because the mean of its divisors is an integer number (3501414).

Almost surely, 2^28900430 is an apocalyptic number.

28900430 is a deficient number, since it is larger than the sum of its proper divisors (27122194).

28900430 is a wasteful number, since it uses less digits than its factorization.

28900430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222331.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 28900430 is about 5375.9120156491. The cubic root of 28900430 is about 306.8796580110.

The spelling of 28900430 in words is "twenty-eight million, nine hundred thousand, four hundred thirty".