155360040 has 128 divisors (see below), whose sum is σ = 522357120. Its totient is φ = 36633600.

The previous prime is 155359969. The next prime is 155360071. The reversal of 155360040 is 40063551.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47250 + ... + 50430.

It is an arithmetic number, because the mean of its divisors is an integer number (4080915).

Almost surely, 2^155360040 is an apocalyptic number.

155360040 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 155360040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261178560).

155360040 is an abundant number, since it is smaller than the sum of its proper divisors (366997080).

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

155360040 is a wasteful number, since it uses less digits than its factorization.

155360040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243 (or 3239 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 155360040 is about 12464.3507652826. The cubic root of 155360040 is about 537.5841324947.

The spelling of 155360040 in words is "one hundred fifty-five million, three hundred sixty thousand, forty".