145393446 has 16 divisors (see below), whose sum is σ = 317222208. Its totient is φ = 44058600.

The previous prime is 145393411. The next prime is 145393471. The reversal of 145393446 is 644393541.

It is a super-2 number, since 2×145393446² = 42278508279509832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1101400 + ... + 1101531.

It is an arithmetic number, because the mean of its divisors is an integer number (19826388).

Almost surely, 2^145393446 is an apocalyptic number.

145393446 is an abundant number, since it is smaller than the sum of its proper divisors (171828762).

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

145393446 is a wasteful number, since it uses less digits than its factorization.

145393446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202947.

The product of its digits is 155520, while the sum is 39.

The square root of 145393446 is about 12057.9204674770. The cubic root of 145393446 is about 525.8335312487.

The spelling of 145393446 in words is "one hundred forty-five million, three hundred ninety-three thousand, four hundred forty-six".