30141840 has 40 divisors (see below), whose sum is σ = 93440448. Its totient is φ = 8037760.

The previous prime is 30141829. The next prime is 30141841. The reversal of 30141840 is 4814103.

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

It is not an unprimeable number, because it can be changed into a prime (30141841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62556 + ... + 63035.

Almost surely, 2^30141840 is an apocalyptic number.

30141840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30141840 is an abundant number, since it is smaller than the sum of its proper divisors (63298608).

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

30141840 is a wasteful number, since it uses less digits than its factorization.

30141840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125607 (or 125601 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 30141840 is about 5490.1584676583. The cubic root of 30141840 is about 311.2121806922.

Adding to 30141840 its reverse (4814103), we get a palindrome (34955943).

The spelling of 30141840 in words is "thirty million, one hundred forty-one thousand, eight hundred forty".