145172236 has 24 divisors (see below), whose sum is σ = 291735360. Its totient is φ = 62514000.

The previous prime is 145172233. The next prime is 145172239. The reversal of 145172236 is 632271541.

It is an interprime number because it is at equal distance from previous prime (145172233) and next prime (145172239).

It is a junction number, because it is equal to n+sod(n) for n = 145172198 and 145172207.

It is not an unprimeable number, because it can be changed into a prime (145172233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85990 + ... + 87661.

It is an arithmetic number, because the mean of its divisors is an integer number (12155640).

Almost surely, 2^145172236 is an apocalyptic number.

It is an amenable number.

145172236 is an abundant number, since it is smaller than the sum of its proper divisors (146563124).

145172236 is a wasteful number, since it uses less digits than its factorization.

145172236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173685 (or 173683 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 145172236 is about 12048.7441669246. The cubic root of 145172236 is about 525.5667180363.

The spelling of 145172236 in words is "one hundred forty-five million, one hundred seventy-two thousand, two hundred thirty-six".