145569904 has 20 divisors (see below), whose sum is σ = 288044064. Its totient is φ = 71235968.

The previous prime is 145569901. The next prime is 145569911. The reversal of 145569904 is 409965541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145569901) 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, 96037 + ... + 97540.

Almost surely, 2^145569904 is an apocalyptic number.

It is an amenable number.

145569904 is a deficient number, since it is larger than the sum of its proper divisors (142474160).

145569904 is a wasteful number, since it uses less digits than its factorization.

145569904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193632 (or 193626 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 145569904 is about 12065.2353478911. The cubic root of 145569904 is about 526.0461727023.

The spelling of 145569904 in words is "one hundred forty-five million, five hundred sixty-nine thousand, nine hundred four".