155228744 has 16 divisors (see below), whose sum is σ = 317513520. Its totient is φ = 70558480.

The previous prime is 155228743. The next prime is 155228783. The reversal of 155228744 is 447822551.

155228744 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 155228698 and 155228707.

It is not an unprimeable number, because it can be changed into a prime (155228743) 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, 881894 + ... + 882069.

It is an arithmetic number, because the mean of its divisors is an integer number (19844595).

Almost surely, 2^155228744 is an apocalyptic number.

It is an amenable number.

155228744 is an abundant number, since it is smaller than the sum of its proper divisors (162284776).

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

155228744 is a wasteful number, since it uses less digits than its factorization.

155228744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763980 (or 1763976 counting only the distinct ones).

The product of its digits is 89600, while the sum is 38.

The square root of 155228744 is about 12459.0827912812. The cubic root of 155228744 is about 537.4326509449.

The spelling of 155228744 in words is "one hundred fifty-five million, two hundred twenty-eight thousand, seven hundred forty-four".