1626412240 has 20 divisors (see below), whose sum is σ = 3781408644. Its totient is φ = 650564864.

The previous prime is 1626412237. The next prime is 1626412259. The reversal of 1626412240 is 422146261.

It can be written as a sum of positive squares in 2 ways, for example, as 540841536 + 1085570704 = 23256^2 + 32948^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1626412199 and 1626412208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10164997 + ... + 10165156.

Almost surely, 2^1626412240 is an apocalyptic number.

1626412240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1626412240 is an abundant number, since it is smaller than the sum of its proper divisors (2154996404).

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

1626412240 is a wasteful number, since it uses less digits than its factorization.

1626412240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20330166 (or 20330160 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 1626412240 is about 40328.8016186943. The cubic root of 1626412240 is about 1176.0078246198.

The spelling of 1626412240 in words is "one billion, six hundred twenty-six million, four hundred twelve thousand, two hundred forty".