161126784 has 384 divisors, whose sum is σ = 601473600. Its totient is φ = 40255488.

The previous prime is 161126737. The next prime is 161126789. The reversal of 161126784 is 487621161.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161126789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3040102 + ... + 3040154.

Almost surely, 2^161126784 is an apocalyptic number.

161126784 is a gapful number since it is divisible by the number (14) 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 161126784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300736800).

161126784 is an abundant number, since it is smaller than the sum of its proper divisors (440346816).

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

161126784 is a wasteful number, since it uses less digits than its factorization.

161126784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 107 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 161126784 is about 12693.5725467655. The cubic root of 161126784 is about 544.1549443299.

161126784 divided by its sum of digits (36) gives a palindrome (4475744).

The spelling of 161126784 in words is "one hundred sixty-one million, one hundred twenty-six thousand, seven hundred eighty-four".