28903387934 has 4 divisors (see below), whose sum is σ = 43355081904. Its totient is φ = 14451693966.

The previous prime is 28903387927. The next prime is 28903387963. The reversal of 28903387934 is 43978330982.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28903387934.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7225846982 + ... + 7225846985.

It is an arithmetic number, because the mean of its divisors is an integer number (10838770476).

Almost surely, 2^28903387934 is an apocalyptic number.

28903387934 is a deficient number, since it is larger than the sum of its proper divisors (14451693970).

28903387934 is a wasteful number, since it uses less digits than its factorization.

28903387934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14451693969.

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 28903387934 in words is "twenty-eight billion, nine hundred three million, three hundred eighty-seven thousand, nine hundred thirty-four".