27640213400 has 48 divisors (see below), whose sum is σ = 64622593800. Its totient is φ = 10994305280.

The previous prime is 27640213399. The next prime is 27640213441. The reversal of 27640213400 is 431204672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 350237 + ... + 421836.

Almost surely, 2^27640213400 is an apocalyptic number.

27640213400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27640213400 is an abundant number, since it is smaller than the sum of its proper divisors (36982380400).

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

27640213400 is a wasteful number, since it uses less digits than its factorization.

27640213400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772268 (or 772259 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The spelling of 27640213400 in words is "twenty-seven billion, six hundred forty million, two hundred thirteen thousand, four hundred".