152638540 has 24 divisors (see below), whose sum is σ = 322589232. Its totient is φ = 60665280.

The previous prime is 152638523. The next prime is 152638559. The reversal of 152638540 is 45836251.

It is a junction number, because it is equal to n+sod(n) for n = 152638496 and 152638505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21166 + ... + 27445.

It is an arithmetic number, because the mean of its divisors is an integer number (13441218).

Almost surely, 2^152638540 is an apocalyptic number.

152638540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

152638540 is an abundant number, since it is smaller than the sum of its proper divisors (169950692).

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

152638540 is a wasteful number, since it uses less digits than its factorization.

152638540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48777 (or 48775 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 152638540 is about 12354.6970824865. The cubic root of 152638540 is about 534.4266020185.

The spelling of 152638540 in words is "one hundred fifty-two million, six hundred thirty-eight thousand, five hundred forty".