102621802 has 4 divisors (see below), whose sum is σ = 153932706. Its totient is φ = 51310900.

The previous prime is 102621797. The next prime is 102621839. The reversal of 102621802 is 208126201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 82828201 + 19793601 = 9101^2 + 4449^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25655449 + ... + 25655452.

Almost surely, 2^102621802 is an apocalyptic number.

102621802 is a deficient number, since it is larger than the sum of its proper divisors (51310904).

102621802 is an equidigital number, since it uses as much as digits as its factorization.

102621802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51310903.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 102621802 is about 10130.2419517009. The cubic root of 102621802 is about 468.1803825319.

The spelling of 102621802 in words is "one hundred two million, six hundred twenty-one thousand, eight hundred two".