3628731 has 4 divisors (see below), whose sum is σ = 4838312. Its totient is φ = 2419152.

The previous prime is 3628711. The next prime is 3628747. The reversal of 3628731 is 1378263.

3628731 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1378263 = 3 ⋅459421.

It is not a de Polignac number, because 3628731 - 2¹⁰ = 3627707 is a prime.

It is a super-2 number, since 2×3628731² = 26335377340722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3628711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604786 + ... + 604791.

It is an arithmetic number, because the mean of its divisors is an integer number (1209578).

Almost surely, 2^3628731 is an apocalyptic number.

3628731 is a deficient number, since it is larger than the sum of its proper divisors (1209581).

3628731 is a wasteful number, since it uses less digits than its factorization.

3628731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209580.

The product of its digits is 6048, while the sum is 30.

The square root of 3628731 is about 1904.9228330827. The cubic root of 3628731 is about 153.6685258068.

The spelling of 3628731 in words is "three million, six hundred twenty-eight thousand, seven hundred thirty-one".