3256626420 has 72 divisors (see below), whose sum is σ = 10459527624. Its totient is φ = 817348608.

The previous prime is 3256626409. The next prime is 3256626431. The reversal of 3256626420 is 246266523.

3256626420 is a `hidden beast` number, since 3 + 2 + 5 + 6 + 6 + 2 + 642 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (3256626409) and next prime (3256626431).

It can be written as a sum of positive squares in 4 ways, for example, as 1764504036 + 1492122384 = 42006^2 + 38628^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 529069 + ... + 535188.

It is an arithmetic number, because the mean of its divisors is an integer number (145271217).

Almost surely, 2^3256626420 is an apocalyptic number.

3256626420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3256626420 is an abundant number, since it is smaller than the sum of its proper divisors (7202901204).

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

3256626420 is a wasteful number, since it uses less digits than its factorization.

3256626420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064289 (or 1064284 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 3256626420 is about 57066.8592091767. The cubic root of 3256626420 is about 1482.2540555674.

The spelling of 3256626420 in words is "three billion, two hundred fifty-six million, six hundred twenty-six thousand, four hundred twenty".