161076440 has 128 divisors (see below), whose sum is σ = 435456000. Its totient is φ = 52459008.

The previous prime is 161076439. The next prime is 161076451. The reversal of 161076440 is 44670161.

161076440 = T₄₃₅ + T₄₃₆ + ... + T₁₀₁₅.

161076440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 673841 + ... + 674079.

It is an arithmetic number, because the mean of its divisors is an integer number (3402000).

Almost surely, 2^161076440 is an apocalyptic number.

161076440 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 161076440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217728000).

161076440 is an abundant number, since it is smaller than the sum of its proper divisors (274379560).

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

161076440 is a wasteful number, since it uses less digits than its factorization.

161076440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 161076440 is about 12691.5893409770. The cubic root of 161076440 is about 544.0982647605.

The spelling of 161076440 in words is "one hundred sixty-one million, seventy-six thousand, four hundred forty".