3561930 has 48 divisors (see below), whose sum is σ = 9753120. Its totient is φ = 899424.

The previous prime is 3561913. The next prime is 3561947. The reversal of 3561930 is 391653.

It is an interprime number because it is at equal distance from previous prime (3561913) and next prime (3561947).

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3561894 and 3561903.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 669 + ... + 2751.

It is an arithmetic number, because the mean of its divisors is an integer number (203190).

Almost surely, 2^3561930 is an apocalyptic number.

3561930 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 3561930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4876560).

3561930 is an abundant number, since it is smaller than the sum of its proper divisors (6191190).

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

3561930 is a wasteful number, since it uses less digits than its factorization.

3561930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115 (or 2112 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 3561930 is about 1887.3076060886. The cubic root of 3561930 is about 152.7197226864.

The spelling of 3561930 in words is "three million, five hundred sixty-one thousand, nine hundred thirty".