161250336 has 108 divisors (see below), whose sum is σ = 496692378. Its totient is φ = 49600512.

The previous prime is 161250293. The next prime is 161250347. The reversal of 161250336 is 633052161.

It can be written as a sum of positive squares in 3 ways, for example, as 120033936 + 41216400 = 10956^2 + 6420^2 .

It is a super-2 number, since 2×161250336² = 52003341720225792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 47016 + ... + 50328.

Almost surely, 2^161250336 is an apocalyptic number.

161250336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161250336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248346189).

161250336 is an abundant number, since it is smaller than the sum of its proper divisors (335442042).

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

161250336 is a wasteful number, since it uses less digits than its factorization.

161250336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3355 (or 3331 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 161250336 is about 12698.4383291805. The cubic root of 161250336 is about 544.2939947782.

The spelling of 161250336 in words is "one hundred sixty-one million, two hundred fifty thousand, three hundred thirty-six".