3646427400 has 288 divisors, whose sum is σ = 15268219200. Its totient is φ = 757670400.

The previous prime is 3646427387. The next prime is 3646427459. The reversal of 3646427400 is 47246463.

3646427400 is a `hidden beast` number, since 3 + 6 + 4 + 642 + 7 + 4 + 0 + 0 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 125446 + ... + 151754.

It is an arithmetic number, because the mean of its divisors is an integer number (53014650).

Almost surely, 2^3646427400 is an apocalyptic number.

3646427400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3646427400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7634109600).

3646427400 is an abundant number, since it is smaller than the sum of its proper divisors (11621791800).

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

3646427400 is a wasteful number, since it uses less digits than its factorization.

3646427400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26349 (or 26337 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 36.

The square root of 3646427400 is about 60385.6555814376. The cubic root of 3646427400 is about 1539.1792162990.

The spelling of 3646427400 in words is "three billion, six hundred forty-six million, four hundred twenty-seven thousand, four hundred".