30201240 has 32 divisors (see below), whose sum is σ = 90604080. Its totient is φ = 8053632.

The previous prime is 30201233. The next prime is 30201247. The reversal of 30201240 is 4210203.

It is an interprime number because it is at equal distance from previous prime (30201233) and next prime (30201247).

It is a super-2 number, since 2×30201240² = 1824229795075200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30201247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125719 + ... + 125958.

Almost surely, 2^30201240 is an apocalyptic number.

30201240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30201240 is an abundant number, since it is smaller than the sum of its proper divisors (60402840).

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

30201240 is a wasteful number, since it uses less digits than its factorization.

30201240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251691 (or 251687 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 30201240 is about 5495.5654850070. The cubic root of 30201240 is about 311.4164800256.

Adding to 30201240 its reverse (4210203), we get a palindrome (34411443).

The spelling of 30201240 in words is "thirty million, two hundred one thousand, two hundred forty".