161267200 has 120 divisors (see below), whose sum is σ = 410239368. Its totient is φ = 62791680.

The previous prime is 161267189. The next prime is 161267207. The reversal of 161267200 is 2762161.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161267207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 550254 + ... + 550546.

Almost surely, 2^161267200 is an apocalyptic number.

161267200 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 161267200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205119684).

161267200 is an abundant number, since it is smaller than the sum of its proper divisors (248972168).

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

161267200 is an equidigital number, since it uses as much as digits as its factorization.

161267200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 161267200 is about 12699.1023304799. The cubic root of 161267200 is about 544.3129687003.

The spelling of 161267200 in words is "one hundred sixty-one million, two hundred sixty-seven thousand, two hundred".