145107640 has 32 divisors (see below), whose sum is σ = 332657280. Its totient is φ = 56947072.

The previous prime is 145107637. The next prime is 145107643. The reversal of 145107640 is 46701541.

It is an interprime number because it is at equal distance from previous prime (145107637) and next prime (145107643).

It is a junction number, because it is equal to n+sod(n) for n = 145107599 and 145107608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145107643) 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, 32104 + ... + 36343.

It is an arithmetic number, because the mean of its divisors is an integer number (10395540).

Almost surely, 2^145107640 is an apocalyptic number.

145107640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145107640 is an abundant number, since it is smaller than the sum of its proper divisors (187549640).

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

145107640 is a wasteful number, since it uses less digits than its factorization.

145107640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68511 (or 68507 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 145107640 is about 12046.0632573468. The cubic root of 145107640 is about 525.4887542206.

The spelling of 145107640 in words is "one hundred forty-five million, one hundred seven thousand, six hundred forty".