145405332 has 18 divisors (see below), whose sum is σ = 367552458. Its totient is φ = 48468432.

The previous prime is 145405327. The next prime is 145405363. The reversal of 145405332 is 233504541.

It can be written as a sum of positive squares in only one way, i.e., 143137296 + 2268036 = 11964^2 + 1506^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×145405332² = 42285421148060448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145405296 and 145405305.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2019483 + ... + 2019554.

It is an arithmetic number, because the mean of its divisors is an integer number (20419581).

Almost surely, 2^145405332 is an apocalyptic number.

145405332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145405332 is an abundant number, since it is smaller than the sum of its proper divisors (222147126).

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

145405332 is a wasteful number, since it uses less digits than its factorization.

145405332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4039047 (or 4039042 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 145405332 is about 12058.4133284608. The cubic root of 145405332 is about 525.8478599254.

Adding to 145405332 its reverse (233504541), we get a palindrome (378909873).

The spelling of 145405332 in words is "one hundred forty-five million, four hundred five thousand, three hundred thirty-two".