27694990 has 16 divisors (see below), whose sum is σ = 52018848. Its totient is φ = 10596256.

The previous prime is 27694987. The next prime is 27694993. The reversal of 27694990 is 9949672.

It is an interprime number because it is at equal distance from previous prime (27694987) and next prime (27694993).

It is a super-2 number, since 2×27694990² = 1534024942200200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 27694990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27694993) 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, 59977 + ... + 60436.

It is an arithmetic number, because the mean of its divisors is an integer number (3251178).

Almost surely, 2^27694990 is an apocalyptic number.

27694990 is a deficient number, since it is larger than the sum of its proper divisors (24323858).

27694990 is a wasteful number, since it uses less digits than its factorization.

27694990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120443.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 27694990 is about 5262.6029681138. The cubic root of 27694990 is about 302.5522619901.

It can be divided in two parts, 276 and 94990, that added together give a triangular number (95266 = T₄₃₆).

The spelling of 27694990 in words is "twenty-seven million, six hundred ninety-four thousand, nine hundred ninety".