155784396 has 24 divisors (see below), whose sum is σ = 384879600. Its totient is φ = 48873472.

The previous prime is 155784383. The next prime is 155784449. The reversal of 155784396 is 693487551.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

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 in 7 ways as a sum of consecutive naturals, for example, 381621 + ... + 382028.

It is an arithmetic number, because the mean of its divisors is an integer number (16036650).

Almost surely, 2^155784396 is an apocalyptic number.

It is an amenable number.

155784396 is an abundant number, since it is smaller than the sum of its proper divisors (229095204).

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

155784396 is a wasteful number, since it uses less digits than its factorization.

155784396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763673 (or 763671 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The square root of 155784396 is about 12481.3619449161. The cubic root of 155784396 is about 538.0731464049.

The spelling of 155784396 in words is "one hundred fifty-five million, seven hundred eighty-four thousand, three hundred ninety-six".