30361761 has 12 divisors (see below), whose sum is σ = 44022420. Its totient is φ = 20164320.

The previous prime is 30361757. The next prime is 30361777. The reversal of 30361761 is 16716303.

It can be written as a sum of positive squares in 2 ways, for example, as 13395600 + 16966161 = 3660^2 + 4119^2 .

It is not a de Polignac number, because 30361761 - 2² = 30361757 is a prime.

It is a super-2 number, since 2×30361761² = 1843673062042242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30360761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3850 + ... + 8691.

It is an arithmetic number, because the mean of its divisors is an integer number (3668535).

Almost surely, 2^30361761 is an apocalyptic number.

It is an amenable number.

30361761 is a deficient number, since it is larger than the sum of its proper divisors (13660659).

30361761 is a wasteful number, since it uses less digits than its factorization.

30361761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12816 (or 12813 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 30361761 is about 5510.1507238913. The cubic root of 30361761 is about 311.9672364511.

The spelling of 30361761 in words is "thirty million, three hundred sixty-one thousand, seven hundred sixty-one".