161826428 has 12 divisors (see below), whose sum is σ = 286608840. Its totient is φ = 79938192.

The previous prime is 161826407. The next prime is 161826433. The reversal of 161826428 is 824628161.

It is a happy number.

161826428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 161826391 and 161826400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243383 + ... + 244046.

It is an arithmetic number, because the mean of its divisors is an integer number (23884070).

Almost surely, 2^161826428 is an apocalyptic number.

It is an amenable number.

161826428 is a deficient number, since it is larger than the sum of its proper divisors (124782412).

161826428 is a wasteful number, since it uses less digits than its factorization.

161826428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487516 (or 487514 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The square root of 161826428 is about 12721.1016818513. The cubic root of 161826428 is about 544.9414161420.

The spelling of 161826428 in words is "one hundred sixty-one million, eight hundred twenty-six thousand, four hundred twenty-eight".