30690054 has 36 divisors (see below), whose sum is σ = 70193916. Its totient is φ = 9689544.

The previous prime is 30690043. The next prime is 30690059. The reversal of 30690054 is 45009603.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30690059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4137 + ... + 8859.

It is an arithmetic number, because the mean of its divisors is an integer number (1949831).

Almost surely, 2^30690054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30690054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35096958).

30690054 is an abundant number, since it is smaller than the sum of its proper divisors (39503862).

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

30690054 is a wasteful number, since it uses less digits than its factorization.

30690054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4769 (or 4747 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 30690054 is about 5539.8604675569. The cubic root of 30690054 is about 313.0876120395.

Adding to 30690054 its reverse (45009603), we get a palindrome (75699657).

The spelling of 30690054 in words is "thirty million, six hundred ninety thousand, fifty-four".