145332278 has 32 divisors (see below), whose sum is σ = 276971520. Its totient is φ = 55637280.

The previous prime is 145332277. The next prime is 145332329. The reversal of 145332278 is 872233541.

It is a super-2 number, since 2×145332278² = 42242942057338568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145332277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7238 + ... + 18521.

It is an arithmetic number, because the mean of its divisors is an integer number (8655360).

Almost surely, 2^145332278 is an apocalyptic number.

145332278 is a deficient number, since it is larger than the sum of its proper divisors (131639242).

145332278 is a wasteful number, since it uses less digits than its factorization.

145332278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25812.

The product of its digits is 40320, while the sum is 35.

The square root of 145332278 is about 12055.3837765539. The cubic root of 145332278 is about 525.7597803383.

The spelling of 145332278 in words is "one hundred forty-five million, three hundred thirty-two thousand, two hundred seventy-eight".