161204030 has 96 divisors (see below), whose sum is σ = 345316608. Its totient is φ = 53913600.

The previous prime is 161204027. The next prime is 161204041. The reversal of 161204030 is 30402161.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 890540 + ... + 890720.

It is an arithmetic number, because the mean of its divisors is an integer number (3597048).

Almost surely, 2^161204030 is an apocalyptic number.

161204030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161204030 is an abundant number, since it is smaller than the sum of its proper divisors (184112578).

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

161204030 is a wasteful number, since it uses less digits than its factorization.

161204030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 161204030 is about 12696.6149031937. The cubic root of 161204030 is about 544.2418884460.

Adding to 161204030 its reverse (30402161), we get a palindrome (191606191).

It can be divided in two parts, 16120 and 4030, that multiplied together give a square (64963600 = 8060²).

The spelling of 161204030 in words is "one hundred sixty-one million, two hundred four thousand, thirty".