161426356 has 96 divisors (see below), whose sum is σ = 387797760. Its totient is φ = 56899584.

The previous prime is 161426347. The next prime is 161426387. The reversal of 161426356 is 653624161.

It is a super-2 number, since 2×161426356² = 52116936822877472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116886 + ... + 118258.

It is an arithmetic number, because the mean of its divisors is an integer number (4039560).

Almost surely, 2^161426356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161426356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193898880).

161426356 is an abundant number, since it is smaller than the sum of its proper divisors (226371404).

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

161426356 is a wasteful number, since it uses less digits than its factorization.

161426356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433 (or 1431 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 161426356 is about 12705.3672123241. The cubic root of 161426356 is about 544.4919722249.

The spelling of 161426356 in words is "one hundred sixty-one million, four hundred twenty-six thousand, three hundred fifty-six".