628147274 has 4 divisors (see below), whose sum is σ = 942220914. Its totient is φ = 314073636.

The previous prime is 628147259. The next prime is 628147283. The reversal of 628147274 is 472741826.

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., 479916649 + 148230625 = 21907^2 + 12175^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157036817 + ... + 157036820.

Almost surely, 2^628147274 is an apocalyptic number.

628147274 is a deficient number, since it is larger than the sum of its proper divisors (314073640).

628147274 is a wasteful number, since it uses less digits than its factorization.

628147274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314073639.

The product of its digits is 150528, while the sum is 41.

The square root of 628147274 is about 25062.8664362239. The cubic root of 628147274 is about 856.4207078685.

The spelling of 628147274 in words is "six hundred twenty-eight million, one hundred forty-seven thousand, two hundred seventy-four".