16097540 has 12 divisors (see below), whose sum is σ = 33804876. Its totient is φ = 6439008.

The previous prime is 16097533. The next prime is 16097563. The reversal of 16097540 is 4579061.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10640644 + 5456896 = 3262^2 + 2336^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16097497 and 16097506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402419 + ... + 402458.

It is an arithmetic number, because the mean of its divisors is an integer number (2817073).

Almost surely, 2^16097540 is an apocalyptic number.

16097540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16097540 is an abundant number, since it is smaller than the sum of its proper divisors (17707336).

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

16097540 is a wasteful number, since it uses less digits than its factorization.

16097540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804886 (or 804884 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 16097540 is about 4012.1739742937. The cubic root of 16097540 is about 252.4952258680.

The spelling of 16097540 in words is "sixteen million, ninety-seven thousand, five hundred forty".