1029425620 has 48 divisors (see below), whose sum is σ = 2192173200. Its totient is φ = 406010880.

The previous prime is 1029425611. The next prime is 1029425623. The reversal of 1029425620 is 265249201.

It can be written as a sum of positive squares in 8 ways, for example, as 92698384 + 936727236 = 9628^2 + 30606^2 .

It is a super-2 number, since 2×1029425620² = 2119434214224768800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1029425623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 962446 + ... + 963514.

It is an arithmetic number, because the mean of its divisors is an integer number (45670275).

Almost surely, 2^1029425620 is an apocalyptic number.

1029425620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1029425620 is an abundant number, since it is smaller than the sum of its proper divisors (1162747580).

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

1029425620 is a wasteful number, since it uses less digits than its factorization.

1029425620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708 (or 1706 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1029425620 is about 32084.6633144249. The cubic root of 1029425620 is about 1009.7138750989.

The spelling of 1029425620 in words is "one billion, twenty-nine million, four hundred twenty-five thousand, six hundred twenty".