16072481 has 8 divisors (see below), whose sum is σ = 16281000. Its totient is φ = 15865600.

The previous prime is 16072457. The next prime is 16072489. The reversal of 16072481 is 18427061.

It can be written as a sum of positive squares in 4 ways, for example, as 1018081 + 15054400 = 1009^2 + 3880^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16072481 - 2⁶ = 16072417 is a prime.

It is a super-2 number, since 2×16072481² = 516649290990722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16072489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39881 + ... + 40281.

It is an arithmetic number, because the mean of its divisors is an integer number (2035125).

Almost surely, 2^16072481 is an apocalyptic number.

It is an amenable number.

16072481 is a deficient number, since it is larger than the sum of its proper divisors (208519).

16072481 is a wasteful number, since it uses less digits than its factorization.

16072481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 16072481 is about 4009.0498874422. The cubic root of 16072481 is about 252.3641382623.

The spelling of 16072481 in words is "sixteen million, seventy-two thousand, four hundred eighty-one".