2722401 has 24 divisors (see below), whose sum is σ = 4346784. Its totient is φ = 1628160.

The previous prime is 2722399. The next prime is 2722417. The reversal of 2722401 is 1042272.

It is not a de Polignac number, because 2722401 - 2¹ = 2722399 is a prime.

It is a super-2 number, since 2×2722401² = 14822934409602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2722471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10465 + ... + 10721.

It is an arithmetic number, because the mean of its divisors is an integer number (181116).

2^2722401 is an apocalyptic number.

It is an amenable number.

2722401 is a deficient number, since it is larger than the sum of its proper divisors (1624383).

2722401 is a wasteful number, since it uses less digits than its factorization.

2722401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 2722401 is about 1649.9699997273. The cubic root of 2722401 is about 139.6317020363.

Adding to 2722401 its reverse (1042272), we get a palindrome (3764673).

The spelling of 2722401 in words is "two million, seven hundred twenty-two thousand, four hundred one".