28941472364640 has 192 divisors, whose sum is σ = 99458982120960. Its totient is φ = 7015722352640.

The previous prime is 28941472364621. The next prime is 28941472364641. The reversal of 28941472364640 is 4646327414982.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28941472364641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100593472 + ... + 100880768.

It is an arithmetic number, because the mean of its divisors is an integer number (518015531880).

Almost surely, 2^{28941472364640} is an apocalyptic number.

28941472364640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28941472364640 is an abundant number, since it is smaller than the sum of its proper divisors (70517509756320).

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

28941472364640 is a wasteful number, since it uses less digits than its factorization.

28941472364640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306405 (or 306397 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 60.

The spelling of 28941472364640 in words is "twenty-eight trillion, nine hundred forty-one billion, four hundred seventy-two million, three hundred sixty-four thousand, six hundred forty".