540523890 has 48 divisors (see below), whose sum is σ = 1413816768. Its totient is φ = 143272608.

The previous prime is 540523877. The next prime is 540523931. The reversal of 540523890 is 98325045.

540523890 is a `hidden beast` number, since 5 + 40 + 523 + 8 + 90 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2952 + ... + 33011.

It is an arithmetic number, because the mean of its divisors is an integer number (29454516).

Almost surely, 2^540523890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 540523890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (706908384).

540523890 is an abundant number, since it is smaller than the sum of its proper divisors (873292878).

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

540523890 is a wasteful number, since it uses less digits than its factorization.

540523890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36143 (or 36140 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 540523890 is about 23249.1696625923. The cubic root of 540523890 is about 814.5885436110.

The spelling of 540523890 in words is "five hundred forty million, five hundred twenty-three thousand, eight hundred ninety".