155487930 has 64 divisors (see below), whose sum is σ = 403256448. Its totient is φ = 38142720.

The previous prime is 155487929. The next prime is 155487973. The reversal of 155487930 is 39784551.

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 31 ways as a sum of consecutive naturals, for example, 163717 + ... + 164663.

It is an arithmetic number, because the mean of its divisors is an integer number (6300882).

Almost surely, 2^155487930 is an apocalyptic number.

155487930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155487930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201628224).

155487930 is an abundant number, since it is smaller than the sum of its proper divisors (247768518).

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

155487930 is a wasteful number, since it uses less digits than its factorization.

155487930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 155487930 is about 12469.4799410400. The cubic root of 155487930 is about 537.7316023723.

The spelling of 155487930 in words is "one hundred fifty-five million, four hundred eighty-seven thousand, nine hundred thirty".