102778364 has 18 divisors (see below), whose sum is σ = 194763240. Its totient is φ = 47435856.

The previous prime is 102778363. The next prime is 102778369. The reversal of 102778364 is 463877201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102778363) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75344 + ... + 76695.

It is an arithmetic number, because the mean of its divisors is an integer number (10820180).

Almost surely, 2^102778364 is an apocalyptic number.

It is an amenable number.

102778364 is a deficient number, since it is larger than the sum of its proper divisors (91984876).

102778364 is a wasteful number, since it uses less digits than its factorization.

102778364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152069 (or 152054 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 102778364 is about 10137.9664627577. The cubic root of 102778364 is about 468.4183502007.

The spelling of 102778364 in words is "one hundred two million, seven hundred seventy-eight thousand, three hundred sixty-four".