30618090 has 24 divisors (see below), whose sum is σ = 79607268. Its totient is φ = 8164800.

The previous prime is 30618073. The next prime is 30618127. The reversal of 30618090 is 9081603.

It can be written as a sum of positive squares in 2 ways, for example, as 28483569 + 2134521 = 5337^2 + 1461^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170011 + ... + 170190.

Almost surely, 2^30618090 is an apocalyptic number.

30618090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30618090 is an abundant number, since it is smaller than the sum of its proper divisors (48989178).

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

30618090 is a wasteful number, since it uses less digits than its factorization.

30618090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340214 (or 340211 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 30618090 is about 5533.3615461128. The cubic root of 30618090 is about 312.8427045674.

Adding to 30618090 its reverse (9081603), we get a palindrome (39699693).

The spelling of 30618090 in words is "thirty million, six hundred eighteen thousand, ninety".