538246440 has 96 divisors (see below), whose sum is σ = 1841392800. Its totient is φ = 135976320.

The previous prime is 538246433. The next prime is 538246477. The reversal of 538246440 is 44642835.

538246440 is a `hidden beast` number, since 5 + 3 + 8 + 2 + 4 + 644 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 538246395 and 538246404.

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, 32506 + ... + 46185.

It is an arithmetic number, because the mean of its divisors is an integer number (19181175).

Almost surely, 2^538246440 is an apocalyptic number.

It is an amenable number.

538246440 is an abundant number, since it is smaller than the sum of its proper divisors (1303146360).

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

538246440 is a wasteful number, since it uses less digits than its factorization.

538246440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78727 (or 78720 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The square root of 538246440 is about 23200.1387926883. The cubic root of 538246440 is about 813.4428672392.

The spelling of 538246440 in words is "five hundred thirty-eight million, two hundred forty-six thousand, four hundred forty".