145513674 has 72 divisors (see below), whose sum is σ = 336304332. Its totient is φ = 45411840.

The previous prime is 145513661. The next prime is 145513681. The reversal of 145513674 is 476315541.

145513674 is a `hidden beast` number, since 1 + 4 + 551 + 36 + 74 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 74701449 + 70812225 = 8643^2 + 8415^2 .

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 1993302 + ... + 1993374.

Almost surely, 2^145513674 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145513674, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168152166).

145513674 is an abundant number, since it is smaller than the sum of its proper divisors (190790658).

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

145513674 is a wasteful number, since it uses less digits than its factorization.

145513674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 156 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 145513674 is about 12062.9048740343. The cubic root of 145513674 is about 525.9784311685.

It can be divided in two parts, 14551 and 3674, that added together give a square (18225 = 135²).

The spelling of 145513674 in words is "one hundred forty-five million, five hundred thirteen thousand, six hundred seventy-four".