145686730 has 32 divisors (see below), whose sum is σ = 300301056. Its totient is φ = 49849344.

The previous prime is 145686707. The next prime is 145686731. The reversal of 145686730 is 37686541.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (145686731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38587 + ... + 42193.

It is an arithmetic number, because the mean of its divisors is an integer number (9384408).

Almost surely, 2^145686730 is an apocalyptic number.

145686730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145686730 is an abundant number, since it is smaller than the sum of its proper divisors (154614326).

145686730 is a wasteful number, since it uses less digits than its factorization.

145686730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4198.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 145686730 is about 12070.0758075498. The cubic root of 145686730 is about 526.1868598350.

The spelling of 145686730 in words is "one hundred forty-five million, six hundred eighty-six thousand, seven hundred thirty".