1236572 has 12 divisors (see below), whose sum is σ = 2258256. Its totient is φ = 591360.

The previous prime is 1236553. The next prime is 1236583. The reversal of 1236572 is 2756321.

It is a super-2 number, since 2×1236572² = 3058220622368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6629 + ... + 6812.

It is an arithmetic number, because the mean of its divisors is an integer number (188188).

2^1236572 is an apocalyptic number.

It is an amenable number.

1236572 is a deficient number, since it is larger than the sum of its proper divisors (1021684).

1236572 is a wasteful number, since it uses less digits than its factorization.

1236572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13468 (or 13466 counting only the distinct ones).

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

The square root of 1236572 is about 1112.0125898568. The cubic root of 1236572 is about 107.3346149901.

It can be divided in two parts, 123 and 6572, that multiplied together give a triangular number (808356 = T₁₂₇₁).

The spelling of 1236572 in words is "one million, two hundred thirty-six thousand, five hundred seventy-two".