155882380 has 12 divisors (see below), whose sum is σ = 327353040. Its totient is φ = 62352944.

The previous prime is 155882351. The next prime is 155882387. The reversal of 155882380 is 83288551.

It is not an unprimeable number, because it can be changed into a prime (155882387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3897040 + ... + 3897079.

It is an arithmetic number, because the mean of its divisors is an integer number (27279420).

Almost surely, 2^155882380 is an apocalyptic number.

155882380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155882380 is an abundant number, since it is smaller than the sum of its proper divisors (171470660).

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

155882380 is a wasteful number, since it uses less digits than its factorization.

155882380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7794128 (or 7794126 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The square root of 155882380 is about 12485.2865405645. The cubic root of 155882380 is about 538.1859337159.

It can be divided in two parts, 1558 and 82380, that added together give a palindrome (83938).

The spelling of 155882380 in words is "one hundred fifty-five million, eight hundred eighty-two thousand, three hundred eighty".