628578742 has 16 divisors (see below), whose sum is σ = 1036096272. Its totient is φ = 283630720.

The previous prime is 628578737. The next prime is 628578761. The reversal of 628578742 is 247875826.

It is a super-2 number, since 2×628578742² = 790222469788605128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101263 + ... + 107290.

It is an arithmetic number, because the mean of its divisors is an integer number (64756017).

Almost surely, 2^628578742 is an apocalyptic number.

628578742 is a deficient number, since it is larger than the sum of its proper divisors (407517530).

628578742 is a wasteful number, since it uses less digits than its factorization.

628578742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208703.

The product of its digits is 1505280, while the sum is 49.

The square root of 628578742 is about 25071.4726731399. The cubic root of 628578742 is about 856.6167518916.

The spelling of 628578742 in words is "six hundred twenty-eight million, five hundred seventy-eight thousand, seven hundred forty-two".