30040374 has 64 divisors (see below), whose sum is σ = 75995136. Its totient is φ = 7703424.

The previous prime is 30040363. The next prime is 30040397. The reversal of 30040374 is 47304003.

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

It is a self number, because there is not a number n which added to its sum of digits gives 30040374.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19459 + ... + 20945.

It is an arithmetic number, because the mean of its divisors is an integer number (1187424).

Almost surely, 2^30040374 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30040374, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37997568).

30040374 is an abundant number, since it is smaller than the sum of its proper divisors (45954762).

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

30040374 is a wasteful number, since it uses less digits than its factorization.

30040374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549.

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 30040374 is about 5480.9099609463. The cubic root of 30040374 is about 310.8625785618.

Adding to 30040374 its reverse (47304003), we get a palindrome (77344377).

The spelling of 30040374 in words is "thirty million, forty thousand, three hundred seventy-four".