145589772 has 12 divisors (see below), whose sum is σ = 339709496. Its totient is φ = 48529920.

The previous prime is 145589771. The next prime is 145589777. The reversal of 145589772 is 277985541.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×145589772² = 42392763422023968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145589771) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6066229 + ... + 6066252.

Almost surely, 2^145589772 is an apocalyptic number.

145589772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145589772 is an abundant number, since it is smaller than the sum of its proper divisors (194119724).

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

145589772 is a wasteful number, since it uses less digits than its factorization.

145589772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12132488 (or 12132486 counting only the distinct ones).

The product of its digits is 705600, while the sum is 48.

The square root of 145589772 is about 12066.0586771323. The cubic root of 145589772 is about 526.0701039537.

The spelling of 145589772 in words is "one hundred forty-five million, five hundred eighty-nine thousand, seven hundred seventy-two".