4640281 has 8 divisors (see below), whose sum is σ = 4826304. Its totient is φ = 4457520.

The previous prime is 4640267. The next prime is 4640287. The reversal of 4640281 is 1820464.

4640281 = 213² + 214² + ... + 286².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4640281 - 2⁵ = 4640249 is a prime.

It is a super-2 number, since 2×4640281² = 43064415517922, which contains 22 as substring.

It is a Duffinian number.

4640281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4640287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2316 + ... + 3826.

It is an arithmetic number, because the mean of its divisors is an integer number (603288).

Almost surely, 2^4640281 is an apocalyptic number.

It is an amenable number.

4640281 is a deficient number, since it is larger than the sum of its proper divisors (186023).

4640281 is a wasteful number, since it uses less digits than its factorization.

4640281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 4640281 is about 2154.1311473538. The cubic root of 4640281 is about 166.7943852139.

The spelling of 4640281 in words is "four million, six hundred forty thousand, two hundred eighty-one".