27398970 has 24 divisors (see below), whose sum is σ = 71237556. Its totient is φ = 7306368.

The previous prime is 27398953. The next prime is 27398999. The reversal of 27398970 is 7989372.

It can be written as a sum of positive squares in 2 ways, for example, as 23126481 + 4272489 = 4809^2 + 2067^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152127 + ... + 152306.

Almost surely, 2^27398970 is an apocalyptic number.

27398970 is an abundant number, since it is smaller than the sum of its proper divisors (43838586).

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

27398970 is a wasteful number, since it uses less digits than its factorization.

27398970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304446 (or 304443 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 27398970 is about 5234.4025447036. The cubic root of 27398970 is about 301.4704475048.

The spelling of 27398970 in words is "twenty-seven million, three hundred ninety-eight thousand, nine hundred seventy".