145733640 has 64 divisors (see below), whose sum is σ = 470836800. Its totient is φ = 35872512.

The previous prime is 145733603. The next prime is 145733657. The reversal of 145733640 is 46337541.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45150 + ... + 48269.

It is an arithmetic number, because the mean of its divisors is an integer number (7356825).

Almost surely, 2^145733640 is an apocalyptic number.

145733640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145733640 is an abundant number, since it is smaller than the sum of its proper divisors (325103160).

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

145733640 is a wasteful number, since it uses less digits than its factorization.

145733640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93446 (or 93442 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 145733640 is about 12072.0188866651. The cubic root of 145733640 is about 526.2433298071.

The spelling of 145733640 in words is "one hundred forty-five million, seven hundred thirty-three thousand, six hundred forty".