628051442 has 8 divisors (see below), whose sum is σ = 942278832. Its totient is φ = 313958500.

The previous prime is 628051439. The next prime is 628051469. The reversal of 628051442 is 244150826.

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

It is a super-2 number, since 2×628051442² = 788897227596558728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 628051399 and 628051408.

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, 20984 + ... + 41187.

It is an arithmetic number, because the mean of its divisors is an integer number (117784854).

Almost surely, 2^628051442 is an apocalyptic number.

628051442 is a deficient number, since it is larger than the sum of its proper divisors (314227390).

628051442 is a wasteful number, since it uses less digits than its factorization.

628051442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67224.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 628051442 is about 25060.9545309032. The cubic root of 628051442 is about 856.3771529641.

The spelling of 628051442 in words is "six hundred twenty-eight million, fifty-one thousand, four hundred forty-two".