30240240 has 40 divisors (see below), whose sum is σ = 93745488. Its totient is φ = 8064000.

The previous prime is 30240209. The next prime is 30240251. The reversal of 30240240 is 4204203.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62761 + ... + 63240.

Almost surely, 2^30240240 is an apocalyptic number.

30240240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30240240 is an abundant number, since it is smaller than the sum of its proper divisors (63505248).

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

30240240 is a wasteful number, since it uses less digits than its factorization.

30240240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126017 (or 126011 counting only the distinct ones).

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

The square root of 30240240 is about 5499.1126556927. The cubic root of 30240240 is about 311.5504703143.

Adding to 30240240 its reverse (4204203), we get a palindrome (34444443).

The spelling of 30240240 in words is "thirty million, two hundred forty thousand, two hundred forty".