163240000 has 280 divisors, whose sum is σ = 514185408. Its totient is φ = 49920000.

The previous prime is 163239959. The next prime is 163240009. The reversal of 163240000 is 42361.

It is a tau number, because it is divible by the number of its divisors (280).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (163240009) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3079974 + ... + 3080026.

Almost surely, 2^163240000 is an apocalyptic number.

163240000 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 163240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257092704).

163240000 is an abundant number, since it is smaller than the sum of its proper divisors (350945408).

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

163240000 is an equidigital number, since it uses as much as digits as its factorization.

163240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 163240000 is about 12776.5410029476. The cubic root of 163240000 is about 546.5235265393.

Adding to 163240000 its reverse (42361), we get a palindrome (163282361).

It can be divided in two parts, 16 and 3240000, that multiplied together give a square (51840000 = 7200²).

The spelling of 163240000 in words is "one hundred sixty-three million, two hundred forty thousand".