145213772 has 12 divisors (see below), whose sum is σ = 277226376. Its totient is φ = 66006240.

The previous prime is 145213727. The next prime is 145213777. The reversal of 145213772 is 277312541.

It is not an unprimeable number, because it can be changed into a prime (145213777) 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 3 ways as a sum of consecutive naturals, for example, 1650113 + ... + 1650200.

It is an arithmetic number, because the mean of its divisors is an integer number (23102198).

Almost surely, 2^145213772 is an apocalyptic number.

It is an amenable number.

145213772 is a deficient number, since it is larger than the sum of its proper divisors (132012604).

145213772 is a wasteful number, since it uses less digits than its factorization.

145213772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300328 (or 3300326 counting only the distinct ones).

The product of its digits is 11760, while the sum is 32.

The square root of 145213772 is about 12050.4677087655. The cubic root of 145213772 is about 525.6168374856.

The spelling of 145213772 in words is "one hundred forty-five million, two hundred thirteen thousand, seven hundred seventy-two".