1628512992 has 48 divisors (see below), whose sum is σ = 4749832080. Its totient is φ = 542837376.

The previous prime is 1628512979. The next prime is 1628512993. The reversal of 1628512992 is 2992158261.

It is a happy number.

1628512992 is a `hidden beast` number, since 1 + 628 + 5 + 12 + 9 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1628512992² = 5304109130225584128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628512993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 941563 + ... + 943290.

It is an arithmetic number, because the mean of its divisors is an integer number (98954835).

Almost surely, 2^1628512992 is an apocalyptic number.

1628512992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1628512992 is an abundant number, since it is smaller than the sum of its proper divisors (3121319088).

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

1628512992 is a wasteful number, since it uses less digits than its factorization.

1628512992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884872 (or 1884858 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 1628512992 is about 40354.8385203063. The cubic root of 1628512992 is about 1176.5139361330.

The spelling of 1628512992 in words is "one billion, six hundred twenty-eight million, five hundred twelve thousand, nine hundred ninety-two".