145409328 has 30 divisors (see below), whose sum is σ = 406944564. Its totient is φ = 48469728.

The previous prime is 145409321. The next prime is 145409339. The reversal of 145409328 is 823904541.

145409328 is a `hidden beast` number, since 1 + 4 + 540 + 93 + 28 = 666.

It is a super-2 number, since 2×145409328² = 42287745338823168, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 145409292 and 145409301.

It is not an unprimeable number, because it can be changed into a prime (145409321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 504750 + ... + 505037.

Almost surely, 2^145409328 is an apocalyptic number.

145409328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

145409328 is an abundant number, since it is smaller than the sum of its proper divisors (261535236).

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

145409328 is a wasteful number, since it uses less digits than its factorization.

145409328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009801 (or 1009792 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 145409328 is about 12058.5790207636. The cubic root of 145409328 is about 525.8526769629.

The spelling of 145409328 in words is "one hundred forty-five million, four hundred nine thousand, three hundred twenty-eight".