155149344 has 240 divisors, whose sum is σ = 553246848. Its totient is φ = 41637888.

The previous prime is 155149343. The next prime is 155149363. The reversal of 155149344 is 443941551.

It is a happy number.

155149344 is a `hidden beast` number, since 15 + 514 + 93 + 44 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 155149299 and 155149308.

It is not an unprimeable number, because it can be changed into a prime (155149343) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 308197 + ... + 308699.

Almost surely, 2^155149344 is an apocalyptic number.

155149344 is a gapful number since it is divisible by the number (14) 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 155149344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276623424).

155149344 is an abundant number, since it is smaller than the sum of its proper divisors (398097504).

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

155149344 is a wasteful number, since it uses less digits than its factorization.

155149344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 532 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 155149344 is about 12455.8959533227. The cubic root of 155149344 is about 537.3410024759.

The spelling of 155149344 in words is "one hundred fifty-five million, one hundred forty-nine thousand, three hundred forty-four".