161226352 has 20 divisors (see below), whose sum is σ = 357001456. Its totient is φ = 69096960.

The previous prime is 161226337. The next prime is 161226361. The reversal of 161226352 is 253622161.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 161226352.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719649 + ... + 719872.

Almost surely, 2^161226352 is an apocalyptic number.

It is an amenable number.

161226352 is an abundant number, since it is smaller than the sum of its proper divisors (195775104).

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

161226352 is a wasteful number, since it uses less digits than its factorization.

161226352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439536 (or 1439530 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 161226352 is about 12697.4939259682. The cubic root of 161226352 is about 544.2670077658.

The spelling of 161226352 in words is "one hundred sixty-one million, two hundred twenty-six thousand, three hundred fifty-two".