628179340 has 36 divisors (see below), whose sum is σ = 1355852736. Its totient is φ = 244469952.

The previous prime is 628179329. The next prime is 628179341. The reversal of 628179340 is 43971826.

It is a junction number, because it is equal to n+sod(n) for n = 628179293 and 628179302.

It is not an unprimeable number, because it can be changed into a prime (628179341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15909 + ... + 38851.

It is an arithmetic number, because the mean of its divisors is an integer number (37662576).

Almost surely, 2^628179340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628179340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (677926368).

628179340 is an abundant number, since it is smaller than the sum of its proper divisors (727673396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628179340 is a wasteful number, since it uses less digits than its factorization.

628179340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23026 (or 22987 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 628179340 is about 25063.5061394052. The cubic root of 628179340 is about 856.4352806288.

The spelling of 628179340 in words is "six hundred twenty-eight million, one hundred seventy-nine thousand, three hundred forty".