145214730 has 24 divisors (see below), whose sum is σ = 377558532. Its totient is φ = 38723904.

The previous prime is 145214717. The next prime is 145214747. The reversal of 145214730 is 37412541.

It can be written as a sum of positive squares in 2 ways, for example, as 134304921 + 10909809 = 11589^2 + 3303^2 .

It is a junction number, because it is equal to n+sod(n) for n = 145214694 and 145214703.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 806659 + ... + 806838.

Almost surely, 2^145214730 is an apocalyptic number.

145214730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145214730 is an abundant number, since it is smaller than the sum of its proper divisors (232343802).

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

145214730 is a wasteful number, since it uses less digits than its factorization.

145214730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613510 (or 1613507 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 145214730 is about 12050.5074581944. The cubic root of 145214730 is about 525.6179933444.

The spelling of 145214730 in words is "one hundred forty-five million, two hundred fourteen thousand, seven hundred thirty".