145547394 has 16 divisors (see below), whose sum is σ = 291639360. Its totient is φ = 48425040.

The previous prime is 145547393. The next prime is 145547431. The reversal of 145547394 is 493745541.

It is not an unprimeable number, because it can be changed into a prime (145547393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19174 + ... + 25665.

It is an arithmetic number, because the mean of its divisors is an integer number (18227460).

Almost surely, 2^145547394 is an apocalyptic number.

145547394 is an abundant number, since it is smaller than the sum of its proper divisors (146091966).

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

145547394 is a wasteful number, since it uses less digits than its factorization.

145547394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45385.

The product of its digits is 302400, while the sum is 42.

The square root of 145547394 is about 12064.3024663675. The cubic root of 145547394 is about 526.0190564980.

The spelling of 145547394 in words is "one hundred forty-five million, five hundred forty-seven thousand, three hundred ninety-four".