628102402 has 4 divisors (see below), whose sum is σ = 942153606. Its totient is φ = 314051200.

The previous prime is 628102381. The next prime is 628102403. The reversal of 628102402 is 204201826.

It is a happy number.

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., 387263041 + 240839361 = 19679^2 + 15519^2 .

It is not an unprimeable number, because it can be changed into a prime (628102403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157025599 + ... + 157025602.

Almost surely, 2^628102402 is an apocalyptic number.

628102402 is a deficient number, since it is larger than the sum of its proper divisors (314051204).

628102402 is a wasteful number, since it uses less digits than its factorization.

628102402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314051203.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 628102402 is about 25061.9712313297. The cubic root of 628102402 is about 856.4003144423.

The spelling of 628102402 in words is "six hundred twenty-eight million, one hundred two thousand, four hundred two".