1408825620 has 36 divisors (see below), whose sum is σ = 4273438260. Its totient is φ = 375686784.

The previous prime is 1408825619. The next prime is 1408825643. The reversal of 1408825620 is 265288041.

1408825620 is a `hidden beast` number, since 1 + 4 + 0 + 8 + 8 + 25 + 620 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1102505616 + 306320004 = 33204^2 + 17502^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3913225 + ... + 3913584.

Almost surely, 2^1408825620 is an apocalyptic number.

1408825620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1408825620 is an abundant number, since it is smaller than the sum of its proper divisors (2864612640).

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

1408825620 is a wasteful number, since it uses less digits than its factorization.

1408825620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7826824 (or 7826819 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 1408825620 is about 37534.3258897772. The cubic root of 1408825620 is about 1121.0347632925.

The spelling of 1408825620 in words is "one billion, four hundred eight million, eight hundred twenty-five thousand, six hundred twenty".