2631404 has 12 divisors (see below), whose sum is σ = 4753728. Its totient is φ = 1273200.

The previous prime is 2631401. The next prime is 2631427. The reversal of 2631404 is 4041362.

It is a happy number.

It is a super-2 number, since 2×2631404² = 13848574022432, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2²¹ + 6⁵ + 3⁷ + 1 + 4⁹ + 0 + 4⁹ .

It is not an unprimeable number, because it can be changed into a prime (2631401) 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, 10487 + ... + 10734.

It is an arithmetic number, because the mean of its divisors is an integer number (396144).

2^2631404 is an apocalyptic number.

It is an amenable number.

2631404 is a deficient number, since it is larger than the sum of its proper divisors (2122324).

2631404 is a wasteful number, since it uses less digits than its factorization.

2631404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21256 (or 21254 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2631404 is about 1622.1602880110. The cubic root of 2631404 is about 138.0582964509.

Adding to 2631404 its reverse (4041362), we get a palindrome (6672766).

The spelling of 2631404 in words is "two million, six hundred thirty-one thousand, four hundred four".