140628545 has 4 divisors (see below), whose sum is σ = 168754260. Its totient is φ = 112502832.

The previous prime is 140628541. The next prime is 140628547. The reversal of 140628545 is 545826041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19430464 + 121198081 = 4408^2 + 11009^2 .

It is a cyclic number.

It is not a de Polignac number, because 140628545 - 2² = 140628541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140628541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14062850 + ... + 14062859.

It is an arithmetic number, because the mean of its divisors is an integer number (42188565).

Almost surely, 2^140628545 is an apocalyptic number.

It is an amenable number.

140628545 is a deficient number, since it is larger than the sum of its proper divisors (28125715).

140628545 is an equidigital number, since it uses as much as digits as its factorization.

140628545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28125714.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 140628545 is about 11858.6906950135. The cubic root of 140628545 is about 520.0253254431.

The spelling of 140628545 in words is "one hundred forty million, six hundred twenty-eight thousand, five hundred forty-five".