30474240 has 136 divisors (see below), whose sum is σ = 100662528. Its totient is φ = 7864320.

The previous prime is 30474239. The next prime is 30474277. The reversal of 30474240 is 4247403.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 30474240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 983025 + ... + 983055.

Almost surely, 2^30474240 is an apocalyptic number.

30474240 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 30474240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50331264).

30474240 is an abundant number, since it is smaller than the sum of its proper divisors (70188288).

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

30474240 is an frugal number, since it uses more digits than its factorization.

30474240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 30474240 is about 5520.3478151290. The cubic root of 30474240 is about 312.3520024539.

The spelling of 30474240 in words is "thirty million, four hundred seventy-four thousand, two hundred forty".