155000412 has 96 divisors (see below), whose sum is σ = 461296640. Its totient is φ = 44089920.

The previous prime is 155000411. The next prime is 155000431. The reversal of 155000412 is 214000551.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155000411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 318033 + ... + 318519.

Almost surely, 2^155000412 is an apocalyptic number.

155000412 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 155000412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230648320).

155000412 is an abundant number, since it is smaller than the sum of its proper divisors (306296228).

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

155000412 is a wasteful number, since it uses less digits than its factorization.

155000412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 155000412 is about 12449.9161442959. The cubic root of 155000412 is about 537.1690114369.

Adding to 155000412 its reverse (214000551), we get a palindrome (369000963).

The spelling of 155000412 in words is "one hundred fifty-five million, four hundred twelve", and thus it is an aban number.