28990703 has 8 divisors (see below), whose sum is σ = 33808800. Its totient is φ = 24848880.

The previous prime is 28990667. The next prime is 28990711. The reversal of 28990703 is 30709982.

It is not a de Polignac number, because 28990703 - 2⁶ = 28990639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28990733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41918 + ... + 42603.

It is an arithmetic number, because the mean of its divisors is an integer number (4226100).

Almost surely, 2^28990703 is an apocalyptic number.

28990703 is a deficient number, since it is larger than the sum of its proper divisors (4818097).

28990703 is an frugal number, since it uses more digits than its factorization.

28990703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84542 (or 84528 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 28990703 is about 5384.3015331610. The cubic root of 28990703 is about 307.1988476463.

The spelling of 28990703 in words is "twenty-eight million, nine hundred ninety thousand, seven hundred three".