155840830 has 16 divisors (see below), whose sum is σ = 285269040. Its totient is φ = 61279552.

The previous prime is 155840827. The next prime is 155840849. The reversal of 155840830 is 38048551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131479 + ... + 132658.

It is an arithmetic number, because the mean of its divisors is an integer number (17829315).

Almost surely, 2^155840830 is an apocalyptic number.

155840830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155840830 is a deficient number, since it is larger than the sum of its proper divisors (129428210).

155840830 is a wasteful number, since it uses less digits than its factorization.

155840830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264203.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 155840830 is about 12483.6224710618. The cubic root of 155840830 is about 538.1381121626.

The spelling of 155840830 in words is "one hundred fifty-five million, eight hundred forty thousand, eight hundred thirty".