283720745 has 16 divisors (see below), whose sum is σ = 424476288. Its totient is φ = 176864640.

The previous prime is 283720729. The next prime is 283720763. The reversal of 283720745 is 547027382.

It is not a de Polignac number, because 283720745 - 2⁴ = 283720729 is a prime.

It is a super-2 number, since 2×283720745² = 160994922286710050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 283720699 and 283720708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368084 + ... + 368853.

It is an arithmetic number, because the mean of its divisors is an integer number (26529768).

Almost surely, 2^283720745 is an apocalyptic number.

It is an amenable number.

283720745 is a deficient number, since it is larger than the sum of its proper divisors (140755543).

283720745 is a wasteful number, since it uses less digits than its factorization.

283720745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736960.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 283720745 is about 16844.0121408173. The cubic root of 283720745 is about 657.0983306202.

The spelling of 283720745 in words is "two hundred eighty-three million, seven hundred twenty thousand, seven hundred forty-five".