161367428 has 12 divisors (see below), whose sum is σ = 283827852. Its totient is φ = 80273760.

The previous prime is 161367421. The next prime is 161367467. The reversal of 161367428 is 824763161.

It can be written as a sum of positive squares in 2 ways, for example, as 138250564 + 23116864 = 11758^2 + 4808^2 .

It is a junction number, because it is equal to n+sod(n) for n = 161367391 and 161367400.

It is not an unprimeable number, because it can be changed into a prime (161367421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101603 + ... + 103178.

It is an arithmetic number, because the mean of its divisors is an integer number (23652321).

Almost surely, 2^161367428 is an apocalyptic number.

It is an amenable number.

161367428 is a deficient number, since it is larger than the sum of its proper divisors (122460424).

161367428 is a wasteful number, since it uses less digits than its factorization.

161367428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204982 (or 204980 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 161367428 is about 12703.0479807013. The cubic root of 161367428 is about 544.4257093403.

The spelling of 161367428 in words is "one hundred sixty-one million, three hundred sixty-seven thousand, four hundred twenty-eight".