633492540 has 144 divisors (see below), whose sum is σ = 2002099008. Its totient is φ = 161989632.

The previous prime is 633492529. The next prime is 633492557. The reversal of 633492540 is 45294336.

633492540 is a `hidden beast` number, since 63 + 349 + 254 + 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 = 633492495 and 633492504.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 485529 + ... + 486831.

Almost surely, 2^633492540 is an apocalyptic number.

633492540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 633492540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1001049504).

633492540 is an abundant number, since it is smaller than the sum of its proper divisors (1368606468).

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

633492540 is a wasteful number, since it uses less digits than its factorization.

633492540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428 (or 1423 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 633492540 is about 25169.2777011975. The cubic root of 633492540 is about 858.8431082026.

The spelling of 633492540 in words is "six hundred thirty-three million, four hundred ninety-two thousand, five hundred forty".