161527240 has 32 divisors (see below), whose sum is σ = 415356480. Its totient is φ = 55380672.

The previous prime is 161527181. The next prime is 161527241. The reversal of 161527240 is 42725161.

161527240 is digitally balanced in base 3, 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 (28).

It is a junction number, because it is equal to n+sod(n) for n = 161527199 and 161527208.

It is not an unprimeable number, because it can be changed into a prime (161527241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288162 + ... + 288721.

It is an arithmetic number, because the mean of its divisors is an integer number (12979890).

Almost surely, 2^161527240 is an apocalyptic number.

161527240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161527240 is an abundant number, since it is smaller than the sum of its proper divisors (253829240).

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

161527240 is a wasteful number, since it uses less digits than its factorization.

161527240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576901 (or 576897 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 161527240 is about 12709.3367254157. The cubic root of 161527240 is about 544.6053760301.

The spelling of 161527240 in words is "one hundred sixty-one million, five hundred twenty-seven thousand, two hundred forty".