16032261 has 12 divisors (see below), whose sum is σ = 24866592. Its totient is φ = 9161208.

The previous prime is 16032253. The next prime is 16032277. The reversal of 16032261 is 16223061.

It is a happy number.

It is not a de Polignac number, because 16032261 - 2³ = 16032253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16032661) 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, 54385 + ... + 54678.

It is an arithmetic number, because the mean of its divisors is an integer number (2072216).

Almost surely, 2^16032261 is an apocalyptic number.

It is an amenable number.

16032261 is a deficient number, since it is larger than the sum of its proper divisors (8834331).

16032261 is a wasteful number, since it uses less digits than its factorization.

16032261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109080 (or 109073 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 16032261 is about 4004.0305942887. The cubic root of 16032261 is about 252.1534559165.

The spelling of 16032261 in words is "sixteen million, thirty-two thousand, two hundred sixty-one".