145866738 has 16 divisors (see below), whose sum is σ = 296516736. Its totient is φ = 47825040.

The previous prime is 145866737. The next prime is 145866751. The reversal of 145866738 is 837668541.

It is a super-3 number, since 3×145866738³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (145866737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198906 + ... + 199637.

It is an arithmetic number, because the mean of its divisors is an integer number (18532296).

Almost surely, 2^145866738 is an apocalyptic number.

145866738 is an abundant number, since it is smaller than the sum of its proper divisors (150649998).

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

145866738 is a wasteful number, since it uses less digits than its factorization.

145866738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398609.

The product of its digits is 967680, while the sum is 48.

The square root of 145866738 is about 12077.5302938970. The cubic root of 145866738 is about 526.4034864292.

The spelling of 145866738 in words is "one hundred forty-five million, eight hundred sixty-six thousand, seven hundred thirty-eight".