155030004 has 72 divisors (see below), whose sum is σ = 427049280. Its totient is φ = 48627072.

The previous prime is 155029997. The next prime is 155030033. The reversal of 155030004 is 400030551.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28729 + ... + 33695.

It is an arithmetic number, because the mean of its divisors is an integer number (5931240).

Almost surely, 2^155030004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155030004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213524640).

155030004 is an abundant number, since it is smaller than the sum of its proper divisors (272019276).

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

155030004 is a wasteful number, since it uses less digits than its factorization.

155030004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5014 (or 4989 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 155030004 is about 12451.1045293179. The cubic root of 155030004 is about 537.2031939136.

Adding to 155030004 its reverse (400030551), we get a palindrome (555060555).

The spelling of 155030004 in words is "one hundred fifty-five million, thirty thousand, four".