30204240 has 160 divisors (see below), whose sum is σ = 108314496. Its totient is φ = 6881280.

The previous prime is 30204233. The next prime is 30204263. The reversal of 30204240 is 4240203.

It is a happy number.

It is a super-2 number, since 2×30204240² = 1824592227955200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 44544 + ... + 45216.

Almost surely, 2^30204240 is an apocalyptic number.

30204240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30204240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54157248).

30204240 is an abundant number, since it is smaller than the sum of its proper divisors (78110256).

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

30204240 is a wasteful number, since it uses less digits than its factorization.

30204240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 30204240 is about 5495.8384255726. The cubic root of 30204240 is about 311.4267910648.

Adding to 30204240 its reverse (4240203), we get a palindrome (34444443).

It can be divided in two parts, 3020 and 4240, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 30204240 in words is "thirty million, two hundred four thousand, two hundred forty".