2106626404 has 27 divisors (see below), whose sum is σ = 3766164843. Its totient is φ = 1031052672.

The previous prime is 2106626393. The next prime is 2106626407. The reversal of 2106626404 is 4046266012.

The square root of 2106626404 is 45898.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 96000804 + 2010625600 = 9798^2 + 44840^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2106626407) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4864972 + ... + 4865404.

Almost surely, 2^2106626404 is an apocalyptic number.

2106626404 is the 45898-th square number.

It is an amenable number.

2106626404 is a deficient number, since it is larger than the sum of its proper divisors (1659538439).

2106626404 is an frugal number, since it uses more digits than its factorization.

2106626404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The cubic root of 2106626404 is about 1281.9246769300.

The spelling of 2106626404 in words is "two billion, one hundred six million, six hundred twenty-six thousand, four hundred four".