145405264 has 80 divisors (see below), whose sum is σ = 308730240. Its totient is φ = 66147840.

The previous prime is 145405243. The next prime is 145405277. The reversal of 145405264 is 462504541.

It is a happy number.

It is a super-2 number, since 2×145405264² = 42285381597819392, 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 15 ways as a sum of consecutive naturals, for example, 803254 + ... + 803434.

It is an arithmetic number, because the mean of its divisors is an integer number (3859128).

Almost surely, 2^145405264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145405264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154365120).

145405264 is an abundant number, since it is smaller than the sum of its proper divisors (163324976).

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

145405264 is a wasteful number, since it uses less digits than its factorization.

145405264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 145405264 is about 12058.4105088523. The cubic root of 145405264 is about 525.8477779531.

The spelling of 145405264 in words is "one hundred forty-five million, four hundred five thousand, two hundred sixty-four".