3628431 has 6 divisors (see below), whose sum is σ = 5241080. Its totient is φ = 2418948.

The previous prime is 3628421. The next prime is 3628439. The reversal of 3628431 is 1348263.

It is a happy number.

3628431 is a `hidden beast` number, since 3 + 628 + 4 + 31 = 666.

It is not a de Polignac number, because 3628431 - 2⁵ = 3628399 is a prime.

It is a super-2 number, since 2×3628431² = 26331023043522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3628395 and 3628404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3628439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 201571 + ... + 201588.

Almost surely, 2^3628431 is an apocalyptic number.

3628431 is a deficient number, since it is larger than the sum of its proper divisors (1612649).

3628431 is a wasteful number, since it uses less digits than its factorization.

3628431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403165 (or 403162 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 3628431 is about 1904.8440881080. The cubic root of 3628431 is about 153.6642909170.

It can be divided in two parts, 36284 and 31, that added together give a triangular number (36315 = T₂₆₉).

The spelling of 3628431 in words is "three million, six hundred twenty-eight thousand, four hundred thirty-one".