424787740 has 48 divisors (see below), whose sum is σ = 972881280. Its totient is φ = 154851840.

The previous prime is 424787729. The next prime is 424787743. The reversal of 424787740 is 47787424.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424787743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10200 + ... + 30880.

It is an arithmetic number, because the mean of its divisors is an integer number (20268360).

Almost surely, 2^424787740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 424787740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486440640).

424787740 is an abundant number, since it is smaller than the sum of its proper divisors (548093540).

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

424787740 is a wasteful number, since it uses less digits than its factorization.

424787740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20782 (or 20780 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 43.

The square root of 424787740 is about 20610.3794239699. The cubic root of 424787740 is about 751.7221109004.

The spelling of 424787740 in words is "four hundred twenty-four million, seven hundred eighty-seven thousand, seven hundred forty".