27729147402 has 48 divisors (see below), whose sum is σ = 65907859680. Its totient is φ = 8355818400.

The previous prime is 27729147401. The next prime is 27729147431. The reversal of 27729147402 is 20474192772.

27729147402 is a `hidden beast` number, since 27 + 72 + 91 + 474 + 0 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (27729147401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 355749 + ... + 426632.

It is an arithmetic number, because the mean of its divisors is an integer number (1373080410).

Almost surely, 2^27729147402 is an apocalyptic number.

27729147402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

27729147402 is an abundant number, since it is smaller than the sum of its proper divisors (38178712278).

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

27729147402 is a wasteful number, since it uses less digits than its factorization.

27729147402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782579 (or 782576 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The spelling of 27729147402 in words is "twenty-seven billion, seven hundred twenty-nine million, one hundred forty-seven thousand, four hundred two".