145681308 has 24 divisors (see below), whose sum is σ = 377692560. Its totient is φ = 48560400.

The previous prime is 145681271. The next prime is 145681337. The reversal of 145681308 is 803186541.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 674343 + ... + 674558.

It is an arithmetic number, because the mean of its divisors is an integer number (15737190).

Almost surely, 2^145681308 is an apocalyptic number.

145681308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

145681308 is an abundant number, since it is smaller than the sum of its proper divisors (232011252).

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

145681308 is a wasteful number, since it uses less digits than its factorization.

145681308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348914 (or 1348906 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 145681308 is about 12069.8512004084. The cubic root of 145681308 is about 526.1803320829.

It can be divided in two parts, 14568 and 1308, that added together give a square (15876 = 126²).

The spelling of 145681308 in words is "one hundred forty-five million, six hundred eighty-one thousand, three hundred eight".