145228330 has 64 divisors (see below), whose sum is σ = 292834080. Its totient is φ = 51508224.

The previous prime is 145228319. The next prime is 145228351. The reversal of 145228330 is 33822541.

It can be written as a sum of positive squares in 16 ways, for example, as 10830681 + 134397649 = 3291^2 + 11593^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 524152 + ... + 524428.

Almost surely, 2^145228330 is an apocalyptic number.

145228330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145228330 is an abundant number, since it is smaller than the sum of its proper divisors (147605750).

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

145228330 is a wasteful number, since it uses less digits than its factorization.

145228330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 145228330 is about 12051.0717365718. The cubic root of 145228330 is about 525.6344016467.

The spelling of 145228330 in words is "one hundred forty-five million, two hundred twenty-eight thousand, three hundred thirty".