102687274 has 4 divisors (see below), whose sum is σ = 154030914. Its totient is φ = 51343636.

The previous prime is 102687269. The next prime is 102687287. The reversal of 102687274 is 472786201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 472786201 = 17 ⋅27810953.

It can be written as a sum of positive squares in only one way, i.e., 83265625 + 19421649 = 9125^2 + 4407^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25671817 + ... + 25671820.

Almost surely, 2^102687274 is an apocalyptic number.

102687274 is a deficient number, since it is larger than the sum of its proper divisors (51343640).

102687274 is an equidigital number, since it uses as much as digits as its factorization.

102687274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51343639.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 102687274 is about 10133.4729485996. The cubic root of 102687274 is about 468.2799266475.

The spelling of 102687274 in words is "one hundred two million, six hundred eighty-seven thousand, two hundred seventy-four".