1628400010 has 8 divisors (see below), whose sum is σ = 2931120036. Its totient is φ = 651360000.

The previous prime is 1628400001. The next prime is 1628400017. The reversal of 1628400010 is 100048261.

It can be written as a sum of positive squares in 2 ways, for example, as 1581573361 + 46826649 = 39769^2 + 6843^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1628400017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81419991 + ... + 81420010.

Almost surely, 2^1628400010 is an apocalyptic number.

1628400010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1628400010 is a deficient number, since it is larger than the sum of its proper divisors (1302720026).

1628400010 is a wasteful number, since it uses less digits than its factorization.

1628400010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162840008.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1628400010 is about 40353.4386391048. The cubic root of 1628400010 is about 1176.4867276771.

Adding to 1628400010 its reverse (100048261), we get a palindrome (1728448271).

The spelling of 1628400010 in words is "one billion, six hundred twenty-eight million, four hundred thousand, ten".