102749764 has 12 divisors (see below), whose sum is σ = 193643884. Its totient is φ = 47422944.

The previous prime is 102749761. The next prime is 102749771. The reversal of 102749764 is 467947201.

It can be written as a sum of positive squares in 2 ways, for example, as 35640900 + 67108864 = 5970^2 + 8192^2 .

It is not an unprimeable number, because it can be changed into a prime (102749761) 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, 987927 + ... + 988030.

Almost surely, 2^102749764 is an apocalyptic number.

It is an amenable number.

102749764 is a deficient number, since it is larger than the sum of its proper divisors (90894120).

102749764 is a wasteful number, since it uses less digits than its factorization.

102749764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975974 (or 1975972 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 102749764 is about 10136.5558253284. Note that the first 3 decimals coincide. The cubic root of 102749764 is about 468.3748974508.

The spelling of 102749764 in words is "one hundred two million, seven hundred forty-nine thousand, seven hundred sixty-four".