145407226 has 8 divisors (see below), whose sum is σ = 218171124. Its totient is φ = 72683520.

The previous prime is 145407217. The next prime is 145407257. The reversal of 145407226 is 622704541.

It can be written as a sum of positive squares in 2 ways, for example, as 145226601 + 180625 = 12051^2 + 425^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×145407226² = 42286522746030152, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1786 + ... + 17146.

Almost surely, 2^145407226 is an apocalyptic number.

145407226 is a deficient number, since it is larger than the sum of its proper divisors (72763898).

145407226 is a wasteful number, since it uses less digits than its factorization.

145407226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20096.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 145407226 is about 12058.4918625838. The cubic root of 145407226 is about 525.8501430868.

The spelling of 145407226 in words is "one hundred forty-five million, four hundred seven thousand, two hundred twenty-six".