187223040 has 264 divisors, whose sum is σ = 689757120. Its totient is φ = 46792704.

The previous prime is 187223021. The next prime is 187223041. The reversal of 187223040 is 40322781.

It is a junction number, because it is equal to n+sod(n) for n = 187222995 and 187223013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187223041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 783241 + ... + 783479.

Almost surely, 2^187223040 is an apocalyptic number.

187223040 is a gapful number since it is divisible by the number (10) 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 187223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344878560).

187223040 is an abundant number, since it is smaller than the sum of its proper divisors (502534080).

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

187223040 is a wasteful number, since it uses less digits than its factorization.

187223040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 187223040 is about 13682.9470509828. The cubic root of 187223040 is about 572.0751690216.

The spelling of 187223040 in words is "one hundred eighty-seven million, two hundred twenty-three thousand, forty".