155918428 has 6 divisors (see below), whose sum is σ = 272857256. Its totient is φ = 77959212.

The previous prime is 155918419. The next prime is 155918489. The reversal of 155918428 is 824819551.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 19489800 + ... + 19489807.

Almost surely, 2^155918428 is an apocalyptic number.

It is an amenable number.

155918428 is a deficient number, since it is larger than the sum of its proper divisors (116938828).

155918428 is a wasteful number, since it uses less digits than its factorization.

155918428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38979611 (or 38979609 counting only the distinct ones).

The product of its digits is 115200, while the sum is 43.

The square root of 155918428 is about 12486.7300763651. The cubic root of 155918428 is about 538.2274159139.

The spelling of 155918428 in words is "one hundred fifty-five million, nine hundred eighteen thousand, four hundred twenty-eight".