155690044 has 48 divisors (see below), whose sum is σ = 287165088. Its totient is φ = 73801728.

The previous prime is 155690039. The next prime is 155690053. The reversal of 155690044 is 440096551.

It is a junction number, because it is equal to n+sod(n) for n = 155689991 and 155690009.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1377732 + ... + 1377844.

It is an arithmetic number, because the mean of its divisors is an integer number (5982606).

Almost surely, 2^155690044 is an apocalyptic number.

It is an amenable number.

155690044 is a deficient number, since it is larger than the sum of its proper divisors (131475044).

155690044 is a wasteful number, since it uses less digits than its factorization.

155690044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 155690044 is about 12477.5816567154. The cubic root of 155690044 is about 537.9644951072.

The spelling of 155690044 in words is "one hundred fifty-five million, six hundred ninety thousand, forty-four".