161293704 has 64 divisors (see below), whose sum is σ = 473739840. Its totient is φ = 45116160.

The previous prime is 161293703. The next prime is 161293709. The reversal of 161293704 is 407392161.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (161293703) 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, 20067 + ... + 26930.

It is an arithmetic number, because the mean of its divisors is an integer number (7402185).

Almost surely, 2^161293704 is an apocalyptic number.

It is an amenable number.

161293704 is an abundant number, since it is smaller than the sum of its proper divisors (312446136).

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

161293704 is a wasteful number, since it uses less digits than its factorization.

161293704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47030 (or 47026 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 161293704 is about 12700.1458259344. The cubic root of 161293704 is about 544.3427860483.

The spelling of 161293704 in words is "one hundred sixty-one million, two hundred ninety-three thousand, seven hundred four".