628422386 has 8 divisors (see below), whose sum is σ = 944079084. Its totient is φ = 313729360.

The previous prime is 628422371. The next prime is 628422401. The reversal of 628422386 is 683224826.

It is an interprime number because it is at equal distance from previous prime (628422371) and next prime (628422401).

It can be written as a sum of positive squares in 2 ways, for example, as 466344025 + 162078361 = 21595^2 + 12731^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239285 + ... + 241896.

Almost surely, 2^628422386 is an apocalyptic number.

628422386 is a deficient number, since it is larger than the sum of its proper divisors (315656698).

628422386 is a wasteful number, since it uses less digits than its factorization.

628422386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481836.

The product of its digits is 221184, while the sum is 41.

The square root of 628422386 is about 25068.3542738649. The cubic root of 628422386 is about 856.5457195415.

The spelling of 628422386 in words is "six hundred twenty-eight million, four hundred twenty-two thousand, three hundred eighty-six".