28898835840 has 1152 divisors, whose sum is σ = 129789410400. Its totient is φ = 5871108096.

The previous prime is 28898835811. The next prime is 28898835853. The reversal of 28898835840 is 4853889882.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 91163362 + ... + 91163678.

Almost surely, 2^28898835840 is an apocalyptic number.

28898835840 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 28898835840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64894705200).

28898835840 is an abundant number, since it is smaller than the sum of its proper divisors (100890574560).

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

28898835840 is a wasteful number, since it uses less digits than its factorization.

28898835840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 35389440, while the sum is 63.

It can be divided in two parts, 2889 and 8835840, that added together give a square (8838729 = 2973²).

The spelling of 28898835840 in words is "twenty-eight billion, eight hundred ninety-eight million, eight hundred thirty-five thousand, eight hundred forty".