30126261 has 32 divisors (see below), whose sum is σ = 47029248. Its totient is φ = 16951040.

The previous prime is 30126247. The next prime is 30126269. The reversal of 30126261 is 16262103.

It is a happy number.

It is not a de Polignac number, because 30126261 - 2⁶ = 30126197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30126269) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46240 + ... + 46886.

It is an arithmetic number, because the mean of its divisors is an integer number (1469664).

Almost surely, 2^30126261 is an apocalyptic number.

It is an amenable number.

30126261 is a deficient number, since it is larger than the sum of its proper divisors (16902987).

30126261 is a wasteful number, since it uses less digits than its factorization.

30126261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 30126261 is about 5488.7394727751. The cubic root of 30126261 is about 311.1585541263.

Adding to 30126261 its reverse (16262103), we get a palindrome (46388364).

It can be divided in two parts, 301 and 26261, that added together give a palindrome (26562).

The spelling of 30126261 in words is "thirty million, one hundred twenty-six thousand, two hundred sixty-one".