145073408 has 18 divisors (see below), whose sum is σ = 289580634. Its totient is φ = 72536576.

The previous prime is 145073407. The next prime is 145073419. The reversal of 145073408 is 804370541.

It can be written as a sum of positive squares in only one way, i.e., 140944384 + 4129024 = 11872^2 + 2032^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145073407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283091 + ... + 283602.

It is an arithmetic number, because the mean of its divisors is an integer number (16087813).

Almost surely, 2^145073408 is an apocalyptic number.

It is an amenable number.

145073408 is a deficient number, since it is larger than the sum of its proper divisors (144507226).

145073408 is an frugal number, since it uses more digits than its factorization.

145073408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566709 (or 566695 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 145073408 is about 12044.6422943980. The cubic root of 145073408 is about 525.4474287012.

The spelling of 145073408 in words is "one hundred forty-five million, seventy-three thousand, four hundred eight".