145218770 has 8 divisors (see below), whose sum is σ = 261393804. Its totient is φ = 58087504.

The previous prime is 145218739. The next prime is 145218779. The reversal of 145218770 is 77812541.

It can be written as a sum of positive squares in 2 ways, for example, as 143113369 + 2105401 = 11963^2 + 1451^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 145218770.

It is not an unprimeable number, because it can be changed into a prime (145218779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7260929 + ... + 7260948.

Almost surely, 2^145218770 is an apocalyptic number.

145218770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145218770 is a deficient number, since it is larger than the sum of its proper divisors (116175034).

145218770 is a wasteful number, since it uses less digits than its factorization.

145218770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14521884.

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 145218770 is about 12050.6750848241. The cubic root of 145218770 is about 525.6228676823.

The spelling of 145218770 in words is "one hundred forty-five million, two hundred eighteen thousand, seven hundred seventy".