189849072 has 80 divisors (see below), whose sum is σ = 575693312. Its totient is φ = 52773120.

The previous prime is 189849067. The next prime is 189849073. The reversal of 189849072 is 270948981.

It is a super-2 number, since 2×189849072² = 72085340278522368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189849073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4797 + ... + 20067.

Almost surely, 2^189849072 is an apocalyptic number.

189849072 is a gapful number since it is divisible by the number (12) 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 189849072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287846656).

189849072 is an abundant number, since it is smaller than the sum of its proper divisors (385844240).

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

189849072 is a wasteful number, since it uses less digits than its factorization.

189849072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15326 (or 15320 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 189849072 is about 13778.5729304598. The cubic root of 189849072 is about 574.7374448442.

The spelling of 189849072 in words is "one hundred eighty-nine million, eight hundred forty-nine thousand, seventy-two".