155004432 has 80 divisors (see below), whose sum is σ = 459851520. Its totient is φ = 44496000.

The previous prime is 155004427. The next prime is 155004439. The reversal of 155004432 is 234400551.

It is a super-3 number, since 3×155004432³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (155004439) 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, 2307 + ... + 17757.

It is an arithmetic number, because the mean of its divisors is an integer number (5748144).

Almost surely, 2^155004432 is an apocalyptic number.

155004432 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 155004432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229925760).

155004432 is an abundant number, since it is smaller than the sum of its proper divisors (304847088).

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

155004432 is a wasteful number, since it uses less digits than its factorization.

155004432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15492 (or 15486 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 155004432 is about 12450.0775901197. The cubic root of 155004432 is about 537.1736552972.

Adding to 155004432 its reverse (234400551), we get a palindrome (389404983).

The spelling of 155004432 in words is "one hundred fifty-five million, four thousand, four hundred thirty-two".