28373070840 has 64 divisors (see below), whose sum is σ = 85146940800. Its totient is φ = 7563687552.

The previous prime is 28373070833. The next prime is 28373070853. The reversal of 28373070840 is 4807037382.

It is a super-2 number, since 2×28373070840² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28373070792 and 28373070801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347451 + ... + 421269.

It is an arithmetic number, because the mean of its divisors is an integer number (1330420950).

Almost surely, 2^28373070840 is an apocalyptic number.

28373070840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28373070840 is an abundant number, since it is smaller than the sum of its proper divisors (56773869960).

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

28373070840 is a wasteful number, since it uses less digits than its factorization.

28373070840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77036 (or 77032 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The spelling of 28373070840 in words is "twenty-eight billion, three hundred seventy-three million, seventy thousand, eight hundred forty".