161459400 has 96 divisors (see below), whose sum is σ = 509119200. Its totient is φ = 42316800.

The previous prime is 161459399. The next prime is 161459407. The reversal of 161459400 is 4954161.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (161459407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33120 + ... + 37680.

It is an arithmetic number, because the mean of its divisors is an integer number (5303325).

Almost surely, 2^161459400 is an apocalyptic number.

161459400 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 161459400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254559600).

161459400 is an abundant number, since it is smaller than the sum of its proper divisors (347659800).

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

161459400 is a wasteful number, since it uses less digits than its factorization.

161459400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4639 (or 4630 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 161459400 is about 12706.6675410983. The cubic root of 161459400 is about 544.5291222204.

The spelling of 161459400 in words is "one hundred sixty-one million, four hundred fifty-nine thousand, four hundred".