145805270 has 32 divisors (see below), whose sum is σ = 286064352. Its totient is φ = 53183232.

The previous prime is 145805251. The next prime is 145805273. The reversal of 145805270 is 72508541.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145805273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4034 + ... + 17546.

It is an arithmetic number, because the mean of its divisors is an integer number (8939511).

Almost surely, 2^145805270 is an apocalyptic number.

145805270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145805270 is a deficient number, since it is larger than the sum of its proper divisors (140259082).

145805270 is a wasteful number, since it uses less digits than its factorization.

145805270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13616.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 145805270 is about 12074.9853001981. The cubic root of 145805270 is about 526.3295341902.

The spelling of 145805270 in words is "one hundred forty-five million, eight hundred five thousand, two hundred seventy".