732138552 has 192 divisors, whose sum is σ = 2179008000. Its totient is φ = 221294592.

The previous prime is 732138551. The next prime is 732138557. The reversal of 732138552 is 255831237.

It is a happy number.

732138552 is a `hidden beast` number, since 73 + 2 + 1 + 38 + 552 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (732138551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3793368 + ... + 3793560.

It is an arithmetic number, because the mean of its divisors is an integer number (11349000).

Almost surely, 2^732138552 is an apocalyptic number.

732138552 is a gapful number since it is divisible by the number (72) 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 732138552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1089504000).

732138552 is an abundant number, since it is smaller than the sum of its proper divisors (1446869448).

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

732138552 is a wasteful number, since it uses less digits than its factorization.

732138552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 323 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 732138552 is about 27058.0589104245. The cubic root of 732138552 is about 901.2897360589.

Adding to 732138552 its reverse (255831237), we get a palindrome (987969789).

The spelling of 732138552 in words is "seven hundred thirty-two million, one hundred thirty-eight thousand, five hundred fifty-two".