145739290 has 16 divisors (see below), whose sum is σ = 262478880. Its totient is φ = 58262800.

The previous prime is 145739287. The next prime is 145739323. The reversal of 145739290 is 92937541.

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, 22965 + ... + 28615.

It is an arithmetic number, because the mean of its divisors is an integer number (16404930).

Almost surely, 2^145739290 is an apocalyptic number.

145739290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145739290 is a deficient number, since it is larger than the sum of its proper divisors (116739590).

145739290 is a wasteful number, since it uses less digits than its factorization.

145739290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8237.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 145739290 is about 12072.2528966221. The cubic root of 145739290 is about 526.2501304250.

The spelling of 145739290 in words is "one hundred forty-five million, seven hundred thirty-nine thousand, two hundred ninety".