424251640 has 16 divisors (see below), whose sum is σ = 954566280. Its totient is φ = 169700640.

The previous prime is 424251601. The next prime is 424251649. The reversal of 424251640 is 46152424.

It is a junction number, because it is equal to n+sod(n) for n = 424251599 and 424251608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424251649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5303106 + ... + 5303185.

Almost surely, 2^424251640 is an apocalyptic number.

424251640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

424251640 is an abundant number, since it is smaller than the sum of its proper divisors (530314640).

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

424251640 is a wasteful number, since it uses less digits than its factorization.

424251640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10606302 (or 10606298 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 424251640 is about 20597.3697349929. The cubic root of 424251640 is about 751.4057427960.

The spelling of 424251640 in words is "four hundred twenty-four million, two hundred fifty-one thousand, six hundred forty".