1026405552 has 40 divisors (see below), whose sum is σ = 2707969536. Its totient is φ = 334854976.

The previous prime is 1026405539. The next prime is 1026405557. The reversal of 1026405552 is 2555046201.

It is not an unprimeable number, because it can be changed into a prime (1026405557) 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, 225228 + ... + 229739.

Almost surely, 2^1026405552 is an apocalyptic number.

1026405552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1026405552 is an abundant number, since it is smaller than the sum of its proper divisors (1681563984).

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

1026405552 is a wasteful number, since it uses less digits than its factorization.

1026405552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455025 (or 455019 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 1026405552 is about 32037.5647014563. The cubic root of 1026405552 is about 1008.7254949679.

The spelling of 1026405552 in words is "one billion, twenty-six million, four hundred five thousand, five hundred fifty-two".