145839474 has 32 divisors (see below), whose sum is σ = 353551680. Its totient is φ = 44193600.

The previous prime is 145839461. The next prime is 145839509. The reversal of 145839474 is 474938541.

145839474 is a `hidden beast` number, since 145 + 8 + 39 + 474 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122167 + ... + 123354.

It is an arithmetic number, because the mean of its divisors is an integer number (11048490).

Almost surely, 2^145839474 is an apocalyptic number.

145839474 is an abundant number, since it is smaller than the sum of its proper divisors (207712206).

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

145839474 is a wasteful number, since it uses less digits than its factorization.

145839474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245543 (or 245537 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 145839474 is about 12076.4015335695. The cubic root of 145839474 is about 526.3706876360.

The spelling of 145839474 in words is "one hundred forty-five million, eight hundred thirty-nine thousand, four hundred seventy-four".