30361540 has 24 divisors (see below), whose sum is σ = 69556032. Its totient is φ = 11040480.

The previous prime is 30361537. The next prime is 30361553. The reversal of 30361540 is 4516303.

It is a super-2 number, since 2×30361540² = 1843646222343200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68784 + ... + 69223.

It is an arithmetic number, because the mean of its divisors is an integer number (2898168).

Almost surely, 2^30361540 is an apocalyptic number.

It is an amenable number.

30361540 is an abundant number, since it is smaller than the sum of its proper divisors (39194492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30361540 is a wasteful number, since it uses less digits than its factorization.

30361540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138027 (or 138025 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 30361540 is about 5510.1306699569. The cubic root of 30361540 is about 311.9664795239.

Adding to 30361540 its reverse (4516303), we get a palindrome (34877843).

The spelling of 30361540 in words is "thirty million, three hundred sixty-one thousand, five hundred forty".