424730881 has 9 divisors (see below), whose sum is σ = 437305449. Its totient is φ = 412509744.

The previous prime is 424730879. The next prime is 424730899. The reversal of 424730881 is 188037424.

The square root of 424730881 is 20609.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 370881 + 424360000 = 609^2 + 20600^2 .

It is not a de Polignac number, because 424730881 - 2¹ = 424730879 is a prime.

It is a super-2 number, since 2×424730881² = 360792642550072322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 424730881.

It is not an unprimeable number, because it can be changed into a prime (424730821) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 762255 + ... + 762811.

Almost surely, 2^424730881 is an apocalyptic number.

424730881 is the 20609-th square number.

424730881 is the 10305-th centered octagonal number.

It is an amenable number.

424730881 is a deficient number, since it is larger than the sum of its proper divisors (12574568).

424730881 is an frugal number, since it uses more digits than its factorization.

424730881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The cubic root of 424730881 is about 751.6885693841.

The spelling of 424730881 in words is "four hundred twenty-four million, seven hundred thirty thousand, eight hundred eighty-one".