145438776 has 192 divisors, whose sum is σ = 470995200. Its totient is φ = 39688704.

The previous prime is 145438747. The next prime is 145438819. The reversal of 145438776 is 677834541.

145438776 is a `hidden beast` number, since 145 + 438 + 7 + 76 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1992276 + ... + 1992348.

It is an arithmetic number, because the mean of its divisors is an integer number (2453100).

Almost surely, 2^145438776 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 145438776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235497600).

145438776 is an abundant number, since it is smaller than the sum of its proper divisors (325556424).

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

145438776 is a wasteful number, since it uses less digits than its factorization.

145438776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 211 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 145438776 is about 12059.7999983416. The cubic root of 145438776 is about 525.8881727701. Note that the first 3 decimals are identical.

The spelling of 145438776 in words is "one hundred forty-five million, four hundred thirty-eight thousand, seven hundred seventy-six".