1602406540 has 48 divisors (see below), whose sum is σ = 3851366400. Its totient is φ = 548597952.

The previous prime is 1602406537. The next prime is 1602406543. The reversal of 1602406540 is 456042061.

It is an interprime number because it is at equal distance from previous prime (1602406537) and next prime (1602406543).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 1602406499 and 1602406508.

It is not an unprimeable number, because it can be changed into a prime (1602406543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92701 + ... + 108619.

It is an arithmetic number, because the mean of its divisors is an integer number (80236800).

Almost surely, 2^1602406540 is an apocalyptic number.

1602406540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1602406540 is an abundant number, since it is smaller than the sum of its proper divisors (2248959860).

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

1602406540 is a wasteful number, since it uses less digits than its factorization.

1602406540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16654 (or 16652 counting only the distinct ones).

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

The square root of 1602406540 is about 40030.0704471026. The cubic root of 1602406540 is about 1170.1931986703.

The spelling of 1602406540 in words is "one billion, six hundred two million, four hundred six thousand, five hundred forty".