28499848604640 has 2304 divisors, whose sum is σ = 122317848576000. Its totient is φ = 6171491450880.

The previous prime is 28499848604603. The next prime is 28499848604663. The reversal of 28499848604640 is 4640684899482.

28499848604640 is a `hidden beast` number, since 2 + 8 + 4 + 9 + 9 + 8 + 4 + 8 + 604 + 6 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 127802011569 + ... + 127802011791.

It is an arithmetic number, because the mean of its divisors is an integer number (53089344000).

Almost surely, 2^{28499848604640} is an apocalyptic number.

28499848604640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28499848604640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61158924288000).

28499848604640 is an abundant number, since it is smaller than the sum of its proper divisors (93817999971360).

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

28499848604640 is a wasteful number, since it uses less digits than its factorization.

28499848604640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 764411904, while the sum is 72.

The spelling of 28499848604640 in words is "twenty-eight trillion, four hundred ninety-nine billion, eight hundred forty-eight million, six hundred four thousand, six hundred forty".