30037140 has 144 divisors (see below), whose sum is σ = 107627520. Its totient is φ = 6635520.

The previous prime is 30037099. The next prime is 30037141. The reversal of 30037140 is 4173003.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30037141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38676 + ... + 39444.

Almost surely, 2^30037140 is an apocalyptic number.

30037140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30037140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53813760).

30037140 is an abundant number, since it is smaller than the sum of its proper divisors (77590380).

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

30037140 is a wasteful number, since it uses less digits than its factorization.

30037140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822 (or 817 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 30037140 is about 5480.6149290020. The cubic root of 30037140 is about 310.8514228456.

The spelling of 30037140 in words is "thirty million, thirty-seven thousand, one hundred forty".