155095380 has 108 divisors (see below), whose sum is σ = 517185396. Its totient is φ = 37593600.

The previous prime is 155095373. The next prime is 155095397. The reversal of 155095380 is 83590551.

155095380 = T₄₀₅ + T₄₀₆ + ... + T₉₉₈.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23213124 + 131882256 = 4818^2 + 11484^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18220 + ... + 25340.

Almost surely, 2^155095380 is an apocalyptic number.

155095380 is a gapful number since it is divisible by the number (10) 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 155095380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258592698).

155095380 is an abundant number, since it is smaller than the sum of its proper divisors (362090016).

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

155095380 is a wasteful number, since it uses less digits than its factorization.

155095380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7158 (or 7142 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 155095380 is about 12453.7295618622. The cubic root of 155095380 is about 537.2786959875.

The spelling of 155095380 in words is "one hundred fifty-five million, ninety-five thousand, three hundred eighty".