102722836 has 12 divisors (see below), whose sum is σ = 179906580. Its totient is φ = 51320960.

The previous prime is 102722819. The next prime is 102722839. The reversal of 102722836 is 638227201.

It can be written as a sum of positive squares in 2 ways, for example, as 65512836 + 37210000 = 8094^2 + 6100^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102722798 and 102722807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102722839) 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, 3991 + ... + 14878.

It is an arithmetic number, because the mean of its divisors is an integer number (14992215).

Almost surely, 2^102722836 is an apocalyptic number.

It is an amenable number.

102722836 is a deficient number, since it is larger than the sum of its proper divisors (77183744).

102722836 is a wasteful number, since it uses less digits than its factorization.

102722836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20234 (or 20232 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 102722836 is about 10135.2274764802. The cubic root of 102722836 is about 468.3339776449. Note that the first 3 decimals are identical.

The spelling of 102722836 in words is "one hundred two million, seven hundred twenty-two thousand, eight hundred thirty-six".