3561272 has 48 divisors (see below), whose sum is σ = 7932120. Its totient is φ = 1488960.

The previous prime is 3561263. The next prime is 3561293. The reversal of 3561272 is 2721653.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12443 + ... + 12725.

Almost surely, 2^3561272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3561272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3966060).

3561272 is an abundant number, since it is smaller than the sum of its proper divisors (4370848).

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

3561272 is a wasteful number, since it uses less digits than its factorization.

3561272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 309 counting only the distinct ones).

The product of its digits is 2520, while the sum is 26.

The square root of 3561272 is about 1887.1332756326. The cubic root of 3561272 is about 152.7103180691.

The spelling of 3561272 in words is "three million, five hundred sixty-one thousand, two hundred seventy-two".