163132440 has 128 divisors (see below), whose sum is σ = 509483520. Its totient is φ = 41753600.

The previous prime is 163132421. The next prime is 163132451. The reversal of 163132440 is 44231361.

It is a super-2 number, since 2×163132440² = 53224385960707200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 163132440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349087 + ... + 349553.

It is an arithmetic number, because the mean of its divisors is an integer number (3980340).

Almost surely, 2^163132440 is an apocalyptic number.

163132440 is a gapful number since it is divisible by the number (10) 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 163132440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254741760).

163132440 is an abundant number, since it is smaller than the sum of its proper divisors (346351080).

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

163132440 is a wasteful number, since it uses less digits than its factorization.

163132440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 163132440 is about 12772.3310323527. The cubic root of 163132440 is about 546.4034640826.

The spelling of 163132440 in words is "one hundred sixty-three million, one hundred thirty-two thousand, four hundred forty".