161487760 has 80 divisors (see below), whose sum is σ = 454363776. Its totient is φ = 52107264.

The previous prime is 161487757. The next prime is 161487763. The reversal of 161487760 is 67784161.

161487760 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161487757) and next prime (161487763).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (161487763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1039 + ... + 18001.

Almost surely, 2^161487760 is an apocalyptic number.

161487760 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 161487760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227181888).

161487760 is an abundant number, since it is smaller than the sum of its proper divisors (292876016).

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

161487760 is a wasteful number, since it uses less digits than its factorization.

161487760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17000 (or 16994 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 161487760 is about 12707.7834416550. The cubic root of 161487760 is about 544.5610021478.

The spelling of 161487760 in words is "one hundred sixty-one million, four hundred eighty-seven thousand, seven hundred sixty".