3470729640 has 128 divisors (see below), whose sum is σ = 11911484160. Its totient is φ = 792520704.

The previous prime is 3470729551. The next prime is 3470729653. The reversal of 3470729640 is 469270743.

It is a super-3 number, since 3×3470729640³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 3470729592 and 3470729601.

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 31 ways as a sum of consecutive naturals, for example, 1471342 + ... + 1473698.

It is an arithmetic number, because the mean of its divisors is an integer number (93058470).

Almost surely, 2^3470729640 is an apocalyptic number.

3470729640 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 3470729640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5955742080).

3470729640 is an abundant number, since it is smaller than the sum of its proper divisors (8440754520).

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

3470729640 is a wasteful number, since it uses less digits than its factorization.

3470729640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4131 (or 4127 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 3470729640 is about 58912.8987574029. The cubic root of 3470729640 is about 1514.0501534446.

The spelling of 3470729640 in words is "three billion, four hundred seventy million, seven hundred twenty-nine thousand, six hundred forty".