162405640 has 48 divisors (see below), whose sum is σ = 370685700. Its totient is φ = 64032768.

The previous prime is 162405631. The next prime is 162405647. The reversal of 162405640 is 46504261.

It can be written as a sum of positive squares in 6 ways, for example, as 43639236 + 118766404 = 6606^2 + 10898^2 .

It is a junction number, because it is equal to n+sod(n) for n = 162405599 and 162405608.

It is not an unprimeable number, because it can be changed into a prime (162405647) 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, 841384 + ... + 841576.

Almost surely, 2^162405640 is an apocalyptic number.

162405640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162405640 is an abundant number, since it is smaller than the sum of its proper divisors (208280060).

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

162405640 is a wasteful number, since it uses less digits than its factorization.

162405640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 162405640 is about 12743.8471428372. The cubic root of 162405640 is about 545.5907966359.

The spelling of 162405640 in words is "one hundred sixty-two million, four hundred five thousand, six hundred forty".