628129954 has 16 divisors (see below), whose sum is σ = 989203392. Its totient is φ = 298563408.

The previous prime is 628129907. The next prime is 628129961. The reversal of 628129954 is 459921826.

It is a super-2 number, since 2×628129954² = 789094478224084232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

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, 34389 + ... + 49384.

It is an arithmetic number, because the mean of its divisors is an integer number (61825212).

Almost surely, 2^628129954 is an apocalyptic number.

628129954 is a deficient number, since it is larger than the sum of its proper divisors (361073438).

628129954 is a wasteful number, since it uses less digits than its factorization.

628129954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83961.

The product of its digits is 311040, while the sum is 46.

The square root of 628129954 is about 25062.5209027344. The cubic root of 628129954 is about 856.4128363901.

The spelling of 628129954 in words is "six hundred twenty-eight million, one hundred twenty-nine thousand, nine hundred fifty-four".