2404261 has 6 divisors (see below), whose sum is σ = 2440550. Its totient is φ = 2368488.

The previous prime is 2404253. The next prime is 2404289. The reversal of 2404261 is 1624042.

2404261 = T₁₉₈ + T₁₉₉ + ... + T₂₈₀.

It can be written as a sum of positive squares in only one way, i.e., 2232036 + 172225 = 1494^2 + 415^2 .

It is not a de Polignac number, because 2404261 - 2³ = 2404253 is a prime.

It is a super-2 number, since 2×2404261² = 11560941912242, which contains 22 as substring.

It is a Duffinian number.

2404261 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2404211) 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, 6715 + ... + 7063.

2^2404261 is an apocalyptic number.

It is an amenable number.

2404261 is a deficient number, since it is larger than the sum of its proper divisors (36289).

2404261 is an frugal number, since it uses more digits than its factorization.

2404261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2404261 is about 1550.5679604584. The cubic root of 2404261 is about 133.9657779988.

The spelling of 2404261 in words is "two million, four hundred four thousand, two hundred sixty-one".