145649900 has 36 divisors (see below), whose sum is σ = 344795640. Its totient is φ = 52963200.

The previous prime is 145649857. The next prime is 145649909. The reversal of 145649900 is 9946541.

145649900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (145649909) 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, 65105 + ... + 67304.

Almost surely, 2^145649900 is an apocalyptic number.

145649900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145649900 is an abundant number, since it is smaller than the sum of its proper divisors (199145740).

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

145649900 is a wasteful number, since it uses less digits than its factorization.

145649900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132434 (or 132427 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 145649900 is about 12068.5500371834. The cubic root of 145649900 is about 526.1425156101.

The spelling of 145649900 in words is "one hundred forty-five million, six hundred forty-nine thousand, nine hundred".