285401641 has 32 divisors (see below), whose sum is σ = 363110400. Its totient is φ = 218687040.

The previous prime is 285401617. The next prime is 285401647. The reversal of 285401641 is 146104582.

It is a cyclic number.

It is not a de Polignac number, because 285401641 - 2⁷ = 285401513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285401647) 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, 241071 + ... + 242251.

It is an arithmetic number, because the mean of its divisors is an integer number (11347200).

Almost surely, 2^285401641 is an apocalyptic number.

It is an amenable number.

285401641 is a deficient number, since it is larger than the sum of its proper divisors (77708759).

285401641 is a wasteful number, since it uses less digits than its factorization.

285401641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 285401641 is about 16893.8344078542. The cubic root of 285401641 is about 658.3934302381.

The spelling of 285401641 in words is "two hundred eighty-five million, four hundred one thousand, six hundred forty-one".