28426084662620 has 48 divisors (see below), whose sum is σ = 61117213627008. Its totient is φ = 11099789682240.

The previous prime is 28426084662617. The next prime is 28426084662643. The reversal of 28426084662620 is 2626648062482.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7711526 + ... + 10785165.

It is an arithmetic number, because the mean of its divisors is an integer number (1273275283896).

Almost surely, 2^{28426084662620} is an apocalyptic number.

28426084662620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28426084662620 is an abundant number, since it is smaller than the sum of its proper divisors (32691128964388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28426084662620 is a wasteful number, since it uses less digits than its factorization.

28426084662620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18498530 (or 18498528 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 56.

The spelling of 28426084662620 in words is "twenty-eight trillion, four hundred twenty-six billion, eighty-four million, six hundred sixty-two thousand, six hundred twenty".