145418904 has 24 divisors (see below), whose sum is σ = 393843060. Its totient is φ = 48472944.

The previous prime is 145418869. The next prime is 145418921. The reversal of 145418904 is 409814541.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×145418904² = 42293315281122432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 1009782 + ... + 1009925.

Almost surely, 2^145418904 is an apocalyptic number.

It is an amenable number.

145418904 is an abundant number, since it is smaller than the sum of its proper divisors (248424156).

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

145418904 is a wasteful number, since it uses less digits than its factorization.

145418904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019719 (or 2019712 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 145418904 is about 12058.9760759361. The cubic root of 145418904 is about 525.8642201350.

The spelling of 145418904 in words is "one hundred forty-five million, four hundred eighteen thousand, nine hundred four".