609203840 has 256 divisors, whose sum is σ = 1859500800. Its totient is φ = 185794560.

The previous prime is 609203797. The next prime is 609203863. The reversal of 609203840 is 48302906.

It is a super-2 number, since 2×609203840² = 742258637341491200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 609203797 and 609203806.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1446830 + ... + 1447250.

It is an arithmetic number, because the mean of its divisors is an integer number (7263675).

Almost surely, 2^609203840 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 609203840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (929750400).

609203840 is an abundant number, since it is smaller than the sum of its proper divisors (1250296960).

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

609203840 is a wasteful number, since it uses less digits than its factorization.

609203840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 609203840 is about 24682.0550197912. The cubic root of 609203840 is about 847.7234769445.

The spelling of 609203840 in words is "six hundred nine million, two hundred three thousand, eight hundred forty".