28682620240 has 40 divisors (see below), whose sum is σ = 68237962848. Its totient is φ = 11206231680.

The previous prime is 28682620231. The next prime is 28682620271. The reversal of 28682620240 is 4202628682.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 28682620193 and 28682620202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4165546 + ... + 4172425.

Almost surely, 2^28682620240 is an apocalyptic number.

28682620240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28682620240 is an abundant number, since it is smaller than the sum of its proper divisors (39555342608).

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

28682620240 is a wasteful number, since it uses less digits than its factorization.

28682620240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8338027 (or 8338021 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 28682620240 in words is "twenty-eight billion, six hundred eighty-two million, six hundred twenty thousand, two hundred forty".