28934653040 has 20 divisors (see below), whose sum is σ = 67273068504. Its totient is φ = 11573861184.

The previous prime is 28934653037. The next prime is 28934653109. The reversal of 28934653040 is 4035643982.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28934652982 and 28934653000.

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 3 ways as a sum of consecutive naturals, for example, 180841502 + ... + 180841661.

Almost surely, 2^28934653040 is an apocalyptic number.

28934653040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28934653040 is an abundant number, since it is smaller than the sum of its proper divisors (38338415464).

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

28934653040 is a wasteful number, since it uses less digits than its factorization.

28934653040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361683176 (or 361683170 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 28934653040 in words is "twenty-eight billion, nine hundred thirty-four million, six hundred fifty-three thousand, forty".