27996790 has 32 divisors (see below), whose sum is σ = 54813024. Its totient is φ = 10252800.

The previous prime is 27996781. The next prime is 27996797. The reversal of 27996790 is 9769972.

It is a super-3 number, since 3×27996790³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27996797) 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, 4065 + ... + 8515.

It is an arithmetic number, because the mean of its divisors is an integer number (1712907).

Almost surely, 2^27996790 is an apocalyptic number.

27996790 is a deficient number, since it is larger than the sum of its proper divisors (26816234).

27996790 is a wasteful number, since it uses less digits than its factorization.

27996790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4512.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 27996790 is about 5291.1992969458. The cubic root of 27996790 is about 303.6472926362.

The spelling of 27996790 in words is "twenty-seven million, nine hundred ninety-six thousand, seven hundred ninety".