16253540 has 24 divisors (see below), whose sum is σ = 34860672. Its totient is φ = 6362720.

The previous prime is 16253519. The next prime is 16253557. The reversal of 16253540 is 4535261.

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, 7706 + ... + 9585.

It is an arithmetic number, because the mean of its divisors is an integer number (1452528).

Almost surely, 2^16253540 is an apocalyptic number.

16253540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16253540 is an abundant number, since it is smaller than the sum of its proper divisors (18607132).

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

16253540 is a wasteful number, since it uses less digits than its factorization.

16253540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17347 (or 17345 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 16253540 is about 4031.5679331992. The cubic root of 16253540 is about 253.3082423596.

The spelling of 16253540 in words is "sixteen million, two hundred fifty-three thousand, five hundred forty".