573449940 has 216 divisors, whose sum is σ = 2051562240. Its totient is φ = 129257856.

The previous prime is 573449923. The next prime is 573449941. The reversal of 573449940 is 49944375.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (573449941) 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 71 ways as a sum of consecutive naturals, for example, 696369 + ... + 697191.

Almost surely, 2^573449940 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 573449940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1025781120).

573449940 is an abundant number, since it is smaller than the sum of its proper divisors (1478112300).

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

573449940 is a wasteful number, since it uses less digits than its factorization.

573449940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931 (or 919 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 573449940 is about 23946.8148195120. The cubic root of 573449940 is about 830.8038566211.

The spelling of 573449940 in words is "five hundred seventy-three million, four hundred forty-nine thousand, nine hundred forty".