30205470 has 32 divisors (see below), whose sum is σ = 74833920. Its totient is φ = 7794720.

The previous prime is 30205451. The next prime is 30205489. The reversal of 30205470 is 7450203.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30205451) and next prime (30205489).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15310 + ... + 17169.

It is an arithmetic number, because the mean of its divisors is an integer number (2338560).

Almost surely, 2^30205470 is an apocalyptic number.

30205470 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30205470 is an abundant number, since it is smaller than the sum of its proper divisors (44628450).

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

30205470 is a wasteful number, since it uses less digits than its factorization.

30205470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32520.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 30205470 is about 5495.9503272864. The cubic root of 30205470 is about 311.4310183935.

Adding to 30205470 its reverse (7450203), we get a palindrome (37655673).

The spelling of 30205470 in words is "thirty million, two hundred five thousand, four hundred seventy".