155430912 has 208 divisors, whose sum is σ = 513739520. Its totient is φ = 40697856.

The previous prime is 155430911. The next prime is 155430917. The reversal of 155430912 is 219034551.

It is a tau number, because it is divible by the number of its divisors (208).

It is a self number, because there is not a number n which added to its sum of digits gives 155430912.

It is not an unprimeable number, because it can be changed into a prime (155430911) 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, 1118139 + ... + 1118277.

Almost surely, 2^155430912 is an apocalyptic number.

155430912 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 155430912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256869760).

155430912 is an abundant number, since it is smaller than the sum of its proper divisors (358308608).

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

155430912 is a wasteful number, since it uses less digits than its factorization.

155430912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 155430912 is about 12467.1934291564. The cubic root of 155430912 is about 537.6658649460.

The spelling of 155430912 in words is "one hundred fifty-five million, four hundred thirty thousand, nine hundred twelve".