283913520 has 320 divisors, whose sum is σ = 1022934528. Its totient is φ = 64512000.

The previous prime is 283913507. The next prime is 283913521. The reversal of 283913520 is 25319382.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (283913521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4654290 + ... + 4654350.

Almost surely, 2^283913520 is an apocalyptic number.

283913520 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 283913520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (511467264).

283913520 is an abundant number, since it is smaller than the sum of its proper divisors (739021008).

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

283913520 is a wasteful number, since it uses less digits than its factorization.

283913520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 283913520 is about 16849.7335290502. The cubic root of 283913520 is about 657.2471194727.

The spelling of 283913520 in words is "two hundred eighty-three million, nine hundred thirteen thousand, five hundred twenty".