3870612720 has 120 divisors (see below), whose sum is σ = 13998749856. Its totient is φ = 952763904.

The previous prime is 3870612719. The next prime is 3870612727. The reversal of 3870612720 is 272160783.

3870612720 is a `hidden beast` number, since 38 + 7 + 0 + 612 + 7 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3870612727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 197404 + ... + 216123.

Almost surely, 2^3870612720 is an apocalyptic number.

3870612720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3870612720 is an abundant number, since it is smaller than the sum of its proper divisors (10128137136).

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

3870612720 is a wasteful number, since it uses less digits than its factorization.

3870612720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413559 (or 413550 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 3870612720 is about 62214.2485287735. The cubic root of 3870612720 is about 1570.0973231351.

The spelling of 3870612720 in words is "three billion, eight hundred seventy million, six hundred twelve thousand, seven hundred twenty".