185420256 has 48 divisors (see below), whose sum is σ = 556262784. Its totient is φ = 52977024.

The previous prime is 185420251. The next prime is 185420281. The reversal of 185420256 is 652024581.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185420251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137290 + ... + 138633.

It is an arithmetic number, because the mean of its divisors is an integer number (11588808).

Almost surely, 2^185420256 is an apocalyptic number.

185420256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

185420256 is an abundant number, since it is smaller than the sum of its proper divisors (370842528).

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

185420256 is a wasteful number, since it uses less digits than its factorization.

185420256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275943 (or 275935 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 185420256 is about 13616.9106628486. The cubic root of 185420256 is about 570.2330595114.

The spelling of 185420256 in words is "one hundred eighty-five million, four hundred twenty thousand, two hundred fifty-six".