189008736 has 192 divisors, whose sum is σ = 601767936. Its totient is φ = 50803200.

The previous prime is 189008731. The next prime is 189008741. The reversal of 189008736 is 637800981.

It is an interprime number because it is at equal distance from previous prime (189008731) and next prime (189008741).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189008731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 895671 + ... + 895881.

It is an arithmetic number, because the mean of its divisors is an integer number (3134208).

Almost surely, 2^189008736 is an apocalyptic number.

189008736 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 189008736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300883968).

189008736 is an abundant number, since it is smaller than the sum of its proper divisors (412759200).

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

189008736 is a wasteful number, since it uses less digits than its factorization.

189008736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 189008736 is about 13748.0448064443. The cubic root of 189008736 is about 573.8881966885. Note that the first 3 decimals are identical.

The spelling of 189008736 in words is "one hundred eighty-nine million, eight thousand, seven hundred thirty-six".