145431764 has 24 divisors (see below), whose sum is σ = 257553408. Its totient is φ = 71850240.

The previous prime is 145431763. The next prime is 145431779. The reversal of 145431764 is 467134541.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145431761) 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, 178919 + ... + 179729.

It is an arithmetic number, because the mean of its divisors is an integer number (10731392).

Almost surely, 2^145431764 is an apocalyptic number.

It is an amenable number.

145431764 is a deficient number, since it is larger than the sum of its proper divisors (112121644).

145431764 is a wasteful number, since it uses less digits than its factorization.

145431764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295 (or 1293 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 145431764 is about 12059.5092769150. The cubic root of 145431764 is about 525.8797211333.

The spelling of 145431764 in words is "one hundred forty-five million, four hundred thirty-one thousand, seven hundred sixty-four".