30041890 has 32 divisors (see below), whose sum is σ = 58215024. Its totient is φ = 11120640.

The previous prime is 30041863. The next prime is 30041899. The reversal of 30041890 is 9814003.

It can be written as a sum of positive squares in 8 ways, for example, as 3323329 + 26718561 = 1823^2 + 5169^2 .

It is not an unprimeable number, because it can be changed into a prime (30041899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8922 + ... + 11818.

Almost surely, 2^30041890 is an apocalyptic number.

30041890 is a deficient number, since it is larger than the sum of its proper divisors (28173134).

30041890 is a wasteful number, since it uses less digits than its factorization.

30041890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2982.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 30041890 is about 5481.0482574048. The cubic root of 30041890 is about 310.8678077437.

Adding to 30041890 its reverse (9814003), we get a palindrome (39855893).

The spelling of 30041890 in words is "thirty million, forty-one thousand, eight hundred ninety".