30426261 has 4 divisors (see below), whose sum is σ = 40568352. Its totient is φ = 20284172.

The previous prime is 30426233. The next prime is 30426271. The reversal of 30426261 is 16262403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30426261 - 2⁵ = 30426229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30426211) 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, 5071041 + ... + 5071046.

It is an arithmetic number, because the mean of its divisors is an integer number (10142088).

Almost surely, 2^30426261 is an apocalyptic number.

It is an amenable number.

30426261 is a deficient number, since it is larger than the sum of its proper divisors (10142091).

30426261 is a wasteful number, since it uses less digits than its factorization.

30426261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10142090.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30426261 is about 5516.0004532270. Note that the first 3 decimals coincide. The cubic root of 30426261 is about 312.1879928018.

Adding to 30426261 its reverse (16262403), we get a palindrome (46688664).

It can be divided in two parts, 304 and 26261, that added together give a triangular number (26565 = T₂₃₀).

The spelling of 30426261 in words is "thirty million, four hundred twenty-six thousand, two hundred sixty-one".