145207830 has 16 divisors (see below), whose sum is σ = 348498864. Its totient is φ = 38722080.

The previous prime is 145207817. The next prime is 145207831. The reversal of 145207830 is 38702541.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 4840261 = 145207830 / (1 + 4 + 5 + 2 + 0 + 7 + 8 + 3 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145207831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2420101 + ... + 2420160.

It is an arithmetic number, because the mean of its divisors is an integer number (21781179).

Almost surely, 2^145207830 is an apocalyptic number.

145207830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145207830 is an abundant number, since it is smaller than the sum of its proper divisors (203291034).

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

145207830 is a wasteful number, since it uses less digits than its factorization.

145207830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4840271.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 145207830 is about 12050.2211597962. The cubic root of 145207830 is about 525.6096681522.

The spelling of 145207830 in words is "one hundred forty-five million, two hundred seven thousand, eight hundred thirty".