28753404657406 has 128 divisors (see below), whose sum is σ = 52666570801152. Its totient is φ = 11598476400000.

The previous prime is 28753404657337. The next prime is 28753404657433. The reversal of 28753404657406 is 60475640435782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 529979781 + ... + 530034031.

It is an arithmetic number, because the mean of its divisors is an integer number (411457584384).

Almost surely, 2^{28753404657406} is an apocalyptic number.

28753404657406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28753404657406 is a deficient number, since it is larger than the sum of its proper divisors (23913166143746).

28753404657406 is a wasteful number, since it uses less digits than its factorization.

28753404657406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54998.

The product of its (nonzero) digits is 135475200, while the sum is 61.

The spelling of 28753404657406 in words is "twenty-eight trillion, seven hundred fifty-three billion, four hundred four million, six hundred fifty-seven thousand, four hundred six".