283397040 has 120 divisors (see below), whose sum is σ = 982520448. Its totient is φ = 73128960.

The previous prime is 283397039. The next prime is 283397087. The reversal of 283397040 is 40793382.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 283396986 and 283397004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15972 + ... + 28668.

Almost surely, 2^283397040 is an apocalyptic number.

283397040 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 283397040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491260224).

283397040 is an abundant number, since it is smaller than the sum of its proper divisors (699123408).

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

283397040 is a wasteful number, since it uses less digits than its factorization.

283397040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12747 (or 12738 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 283397040 is about 16834.4004942261. The cubic root of 283397040 is about 656.8483348476.

The spelling of 283397040 in words is "two hundred eighty-three million, three hundred ninety-seven thousand, forty".