145388764 has 12 divisors (see below), whose sum is σ = 254580088. Its totient is φ = 72651600.

The previous prime is 145388731. The next prime is 145388821. The reversal of 145388764 is 467883541.

It is a happy number.

145388764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145388764² = 42275785394895392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2322 + ... + 17209.

Almost surely, 2^145388764 is an apocalyptic number.

It is an amenable number.

145388764 is a deficient number, since it is larger than the sum of its proper divisors (109191324).

145388764 is a wasteful number, since it uses less digits than its factorization.

145388764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21396 (or 21394 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The square root of 145388764 is about 12057.7263196674. The cubic root of 145388764 is about 525.8278868425.

The spelling of 145388764 in words is "one hundred forty-five million, three hundred eighty-eight thousand, seven hundred sixty-four".