163746240 has 252 divisors, whose sum is σ = 615199176. Its totient is φ = 36793344.

The previous prime is 163746217. The next prime is 163746257. The reversal of 163746240 is 42647361.

It is a happy number.

It is a super-2 number, since 2×163746240² = 53625662228275200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2775331 + ... + 2775389.

Almost surely, 2^163746240 is an apocalyptic number.

163746240 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 163746240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307599588).

163746240 is an abundant number, since it is smaller than the sum of its proper divisors (451452936).

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

163746240 is an equidigital number, since it uses as much as digits as its factorization.

163746240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 163746240 is about 12796.3369758693. The cubic root of 163746240 is about 547.0879032375.

The spelling of 163746240 in words is "one hundred sixty-three million, seven hundred forty-six thousand, two hundred forty".