283937393820 has 96 divisors (see below), whose sum is σ = 806178401280. Its totient is φ = 74655060480.

The previous prime is 283937393797. The next prime is 283937393827. The reversal of 283937393820 is 28393739382.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283937393827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16280505 + ... + 16297935.

It is an arithmetic number, because the mean of its divisors is an integer number (8397691680).

Almost surely, 2^283937393820 is an apocalyptic number.

283937393820 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 283937393820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403089200640).

283937393820 is an abundant number, since it is smaller than the sum of its proper divisors (522241007460).

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

283937393820 is a wasteful number, since it uses less digits than its factorization.

283937393820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21235 (or 21233 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 57.

The spelling of 283937393820 in words is "two hundred eighty-three billion, nine hundred thirty-seven million, three hundred ninety-three thousand, eight hundred twenty".