102147702428 has 12 divisors (see below), whose sum is σ = 179017179432. Its totient is φ = 50999936880.

The previous prime is 102147702421. The next prime is 102147702479. The reversal of 102147702428 is 824207741201.

It is a happy number.

It is a super-2 number, since 2×102147702428² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102147702391 and 102147702400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102147702421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18475475 + ... + 18481002.

It is an arithmetic number, because the mean of its divisors is an integer number (14918098286).

Almost surely, 2^102147702428 is an apocalyptic number.

It is an amenable number.

102147702428 is a deficient number, since it is larger than the sum of its proper divisors (76869477004).

102147702428 is a wasteful number, since it uses less digits than its factorization.

102147702428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36957172 (or 36957170 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 38.

The spelling of 102147702428 in words is "one hundred two billion, one hundred forty-seven million, seven hundred two thousand, four hundred twenty-eight".