420889652 has 24 divisors (see below), whose sum is σ = 757471176. Its totient is φ = 204484608.

The previous prime is 420889649. The next prime is 420889663. The reversal of 420889652 is 256988024.

It can be written as a sum of positive squares in 4 ways, for example, as 359329936 + 61559716 = 18956^2 + 7846^2 .

It is a super-2 number, since 2×420889652² = 354296198321362208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 151508 + ... + 154260.

It is an arithmetic number, because the mean of its divisors is an integer number (31561299).

Almost surely, 2^420889652 is an apocalyptic number.

It is an amenable number.

420889652 is a deficient number, since it is larger than the sum of its proper divisors (336581524).

420889652 is a wasteful number, since it uses less digits than its factorization.

420889652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3827 (or 3825 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 420889652 is about 20515.5953362314. The cubic root of 420889652 is about 749.4156348822.

The spelling of 420889652 in words is "four hundred twenty million, eight hundred eighty-nine thousand, six hundred fifty-two".