145732770 has 40 divisors (see below), whose sum is σ = 391861404. Its totient is φ = 38861856.

The previous prime is 145732757. The next prime is 145732777. The reversal of 145732770 is 77237541.

145732770 is a `hidden beast` number, since 14 + 573 + 2 + 7 + 70 = 666.

145732770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 141776649 + 3956121 = 11907^2 + 1989^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145732777) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 89149 + ... + 90768.

Almost surely, 2^145732770 is an apocalyptic number.

145732770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145732770 is an abundant number, since it is smaller than the sum of its proper divisors (246128634).

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

145732770 is a wasteful number, since it uses less digits than its factorization.

145732770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179936 (or 179927 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 145732770 is about 12071.9828528705. The cubic root of 145732770 is about 526.2422826167.

The spelling of 145732770 in words is "one hundred forty-five million, seven hundred thirty-two thousand, seven hundred seventy".