145307916 has 72 divisors (see below), whose sum is σ = 397457424. Its totient is φ = 44496000.

The previous prime is 145307867. The next prime is 145307941. The reversal of 145307916 is 619703541.

It is a super-2 number, since 2×145307916² = 42228780904526112, which contains 22 as substring.

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

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 116850 + ... + 118086.

It is an arithmetic number, because the mean of its divisors is an integer number (5520242).

Almost surely, 2^145307916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145307916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198728712).

145307916 is an abundant number, since it is smaller than the sum of its proper divisors (252149508).

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

145307916 is a wasteful number, since it uses less digits than its factorization.

145307916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511 (or 1506 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 145307916 is about 12054.3733142789. The cubic root of 145307916 is about 525.7304010526.

The spelling of 145307916 in words is "one hundred forty-five million, three hundred seven thousand, nine hundred sixteen".