28990705243934 has 64 divisors (see below), whose sum is σ = 52896291148800. Its totient is φ = 11640312499968.

The previous prime is 28990705243921. The next prime is 28990705243949. The reversal of 28990705243934 is 43934250709982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8071832 + ... + 11096660.

It is an arithmetic number, because the mean of its divisors is an integer number (826504549200).

Almost surely, 2^{28990705243934} is an apocalyptic number.

28990705243934 is a deficient number, since it is larger than the sum of its proper divisors (23905585904866).

28990705243934 is a wasteful number, since it uses less digits than its factorization.

28990705243934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025257.

The product of its (nonzero) digits is 117573120, while the sum is 65.

The spelling of 28990705243934 in words is "twenty-eight trillion, nine hundred ninety billion, seven hundred five million, two hundred forty-three thousand, nine hundred thirty-four".