145339770 has 16 divisors (see below), whose sum is σ = 348815520. Its totient is φ = 38757264.

The previous prime is 145339763. The next prime is 145339771. The reversal of 145339770 is 77933541.

It is a happy number.

It is a super-2 number, since 2×145339770² = 42247297487305800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145339771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2422300 + ... + 2422359.

It is an arithmetic number, because the mean of its divisors is an integer number (21800970).

Almost surely, 2^145339770 is an apocalyptic number.

145339770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145339770 is an abundant number, since it is smaller than the sum of its proper divisors (203475750).

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

145339770 is a wasteful number, since it uses less digits than its factorization.

145339770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4844669.

The product of its (nonzero) digits is 79380, while the sum is 39.

The square root of 145339770 is about 12055.6945050876. The cubic root of 145339770 is about 525.7688146346.

The spelling of 145339770 in words is "one hundred forty-five million, three hundred thirty-nine thousand, seven hundred seventy".