30052140 has 48 divisors (see below), whose sum is σ = 86426592. Its totient is φ = 7796736.

The previous prime is 30052133. The next prime is 30052157. The reversal of 30052140 is 4125003.

It is a super-2 number, since 2×30052140² = 1806262237159200, which contains 22 as substring.

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

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4549 + ... + 8988.

It is an arithmetic number, because the mean of its divisors is an integer number (1800554).

Almost surely, 2^30052140 is an apocalyptic number.

30052140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30052140 is an abundant number, since it is smaller than the sum of its proper divisors (56374452).

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

30052140 is a wasteful number, since it uses less digits than its factorization.

30052140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13586 (or 13584 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 30052140 is about 5481.9832177780. The cubic root of 30052140 is about 310.9031587453.

Adding to 30052140 its reverse (4125003), we get a palindrome (34177143).

The spelling of 30052140 in words is "thirty million, fifty-two thousand, one hundred forty".