549572640 has 96 divisors (see below), whose sum is σ = 1743819840. Its totient is φ = 145480704.

The previous prime is 549572629. The next prime is 549572717. The reversal of 549572640 is 46275945.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 549572592 and 549572601.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62602 + ... + 70838.

It is an arithmetic number, because the mean of its divisors is an integer number (18164790).

Almost surely, 2^549572640 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 549572640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (871909920).

549572640 is an abundant number, since it is smaller than the sum of its proper divisors (1194247200).

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

549572640 is a wasteful number, since it uses less digits than its factorization.

549572640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8394 (or 8386 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 549572640 is about 23442.9656826947. The cubic root of 549572640 is about 819.1090064388.

The spelling of 549572640 in words is "five hundred forty-nine million, five hundred seventy-two thousand, six hundred forty".