145872615 has 32 divisors (see below), whose sum is σ = 270406656. Its totient is φ = 65767680.

The previous prime is 145872607. The next prime is 145872619. The reversal of 145872615 is 516278541.

It is not a de Polignac number, because 145872615 - 2³ = 145872607 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145872619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1851 + ... + 17180.

It is an arithmetic number, because the mean of its divisors is an integer number (8450208).

Almost surely, 2^145872615 is an apocalyptic number.

145872615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145872615 is a deficient number, since it is larger than the sum of its proper divisors (124534041).

145872615 is a wasteful number, since it uses less digits than its factorization.

145872615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19119.

The product of its digits is 67200, while the sum is 39.

The square root of 145872615 is about 12077.7735944999. The cubic root of 145872615 is about 526.4105559681.

The spelling of 145872615 in words is "one hundred forty-five million, eight hundred seventy-two thousand, six hundred fifteen".