145308747 has 8 divisors (see below), whose sum is σ = 193838080. Its totient is φ = 96825960.

The previous prime is 145308743. The next prime is 145308773. The reversal of 145308747 is 747803541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145308747 - 2² = 145308743 is a prime.

It is a super-2 number, since 2×145308747² = 42229263909420018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145308743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3547 + ... + 17412.

It is an arithmetic number, because the mean of its divisors is an integer number (24229760).

Almost surely, 2^145308747 is an apocalyptic number.

145308747 is a deficient number, since it is larger than the sum of its proper divisors (48529333).

145308747 is a wasteful number, since it uses less digits than its factorization.

145308747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23273.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 145308747 is about 12054.4077830477. The cubic root of 145308747 is about 525.7314032488.

The spelling of 145308747 in words is "one hundred forty-five million, three hundred eight thousand, seven hundred forty-seven".