145240686 has 24 divisors (see below), whose sum is σ = 315773640. Its totient is φ = 48246576.

The previous prime is 145240681. The next prime is 145240691. The reversal of 145240686 is 686042541.

It is an interprime number because it is at equal distance from previous prime (145240681) and next prime (145240691).

It is a self number, because there is not a number n which added to its sum of digits gives 145240686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145240681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8496 + ... + 19043.

It is an arithmetic number, because the mean of its divisors is an integer number (13157235).

Almost surely, 2^145240686 is an apocalyptic number.

145240686 is an abundant number, since it is smaller than the sum of its proper divisors (170532954).

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

145240686 is a wasteful number, since it uses less digits than its factorization.

145240686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27840 (or 27837 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 145240686 is about 12051.5843771680. The cubic root of 145240686 is about 525.6493081838.

The spelling of 145240686 in words is "one hundred forty-five million, two hundred forty thousand, six hundred eighty-six".