155632394 has 16 divisors (see below), whose sum is σ = 239234688. Its totient is φ = 75892992.

The previous prime is 155632391. The next prime is 155632403. The reversal of 155632394 is 493236551.

It is not an unprimeable number, because it can be changed into a prime (155632391) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 103919 + ... + 105405.

It is an arithmetic number, because the mean of its divisors is an integer number (14952168).

Almost surely, 2^155632394 is an apocalyptic number.

155632394 is a deficient number, since it is larger than the sum of its proper divisors (83602294).

155632394 is a wasteful number, since it uses less digits than its factorization.

155632394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749.

The product of its digits is 97200, while the sum is 38.

The square root of 155632394 is about 12475.2712996552. The cubic root of 155632394 is about 537.8980864893.

The spelling of 155632394 in words is "one hundred fifty-five million, six hundred thirty-two thousand, three hundred ninety-four".