3642870 has 128 divisors (see below), whose sum is σ = 11612160. Its totient is φ = 708480.

The previous prime is 3642839. The next prime is 3642883. The reversal of 3642870 is 782463.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43849 + ... + 43931.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

Almost surely, 2^3642870 is an apocalyptic number.

3642870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3642870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5806080).

3642870 is an abundant number, since it is smaller than the sum of its proper divisors (7969290).

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

3642870 is a wasteful number, since it uses less digits than its factorization.

3642870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 3642870 is about 1908.6303990034. The cubic root of 3642870 is about 153.8678520037.

The spelling of 3642870 in words is "three million, six hundred forty-two thousand, eight hundred seventy".