30436140 has 48 divisors (see below), whose sum is σ = 97396992. Its totient is φ = 6956736.

The previous prime is 30436129. The next prime is 30436169. The reversal of 30436140 is 4163403.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 35814 + ... + 36653.

It is an arithmetic number, because the mean of its divisors is an integer number (2029104).

Almost surely, 2^30436140 is an apocalyptic number.

30436140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30436140 is an abundant number, since it is smaller than the sum of its proper divisors (66960852).

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

30436140 is a wasteful number, since it uses less digits than its factorization.

30436140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72486 (or 72484 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 30436140 is about 5516.8958663364. The cubic root of 30436140 is about 312.2217769009.

Adding to 30436140 its reverse (4163403), we get a palindrome (34599543).

The spelling of 30436140 in words is "thirty million, four hundred thirty-six thousand, one hundred forty".