3621402 has 32 divisors (see below), whose sum is σ = 8112000. Its totient is φ = 1197504.

The previous prime is 3621379. The next prime is 3621403. The reversal of 3621402 is 2041263.

It is a happy number.

3621402 is a `hidden beast` number, since 3 + 621 + 40 + 2 = 666.

It is a super-2 number, since 2×3621402² = 26229104891208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (3621403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10578 + ... + 10914.

It is an arithmetic number, because the mean of its divisors is an integer number (253500).

Almost surely, 2^3621402 is an apocalyptic number.

3621402 is an abundant number, since it is smaller than the sum of its proper divisors (4490598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3621402 is a wasteful number, since it uses less digits than its factorization.

3621402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 3621402 is about 1902.9981607979. The cubic root of 3621402 is about 153.5650005705.

Adding to 3621402 its reverse (2041263), we get a palindrome (5662665).

It can be divided in two parts, 362 and 1402, that added together give a square (1764 = 42²).

The spelling of 3621402 in words is "three million, six hundred twenty-one thousand, four hundred two".