145630020 has 48 divisors (see below), whose sum is σ = 425496960. Its totient is φ = 37145856.

The previous prime is 145630019. The next prime is 145630021. The reversal of 145630020 is 20036541.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (145630019) and next prime (145630021).

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (145630021) 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 15 ways as a sum of consecutive naturals, for example, 51385 + ... + 54144.

It is an arithmetic number, because the mean of its divisors is an integer number (8864520).

Almost surely, 2^145630020 is an apocalyptic number.

145630020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145630020 is an abundant number, since it is smaller than the sum of its proper divisors (279866940).

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

145630020 is a wasteful number, since it uses less digits than its factorization.

145630020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105564 (or 105562 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 145630020 is about 12067.7263807231. The cubic root of 145630020 is about 526.1185764951.

Adding to 145630020 its reverse (20036541), we get a palindrome (165666561).

The spelling of 145630020 in words is "one hundred forty-five million, six hundred thirty thousand, twenty".