18734532 has 48 divisors (see below), whose sum is σ = 46448640. Its totient is φ = 5860512.

The previous prime is 18734531. The next prime is 18734539. The reversal of 18734532 is 23543781.

It is a junction number, because it is equal to n+sod(n) for n = 18734493 and 18734502.

It is not an unprimeable number, because it can be changed into a prime (18734531) 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, 28633 + ... + 29279.

It is an arithmetic number, because the mean of its divisors is an integer number (967680).

Almost surely, 2^18734532 is an apocalyptic number.

18734532 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 18734532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23224320).

18734532 is an abundant number, since it is smaller than the sum of its proper divisors (27714108).

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

18734532 is a wasteful number, since it uses less digits than its factorization.

18734532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800 (or 798 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 18734532 is about 4328.3405596140. The cubic root of 18734532 is about 265.5915679631.

Subtracting 18734532 from its reverse (23543781), we obtain a square (4809249 = 2193²).

The spelling of 18734532 in words is "eighteen million, seven hundred thirty-four thousand, five hundred thirty-two".