1249554072 has 64 divisors (see below), whose sum is σ = 3379068000. Its totient is φ = 382777344.

The previous prime is 1249554049. The next prime is 1249554083. The reversal of 1249554072 is 2704559421.

It is a super-2 number, since 2×1249554072² = 3122770757703562368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1249554072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62704 + ... + 80192.

Almost surely, 2^1249554072 is an apocalyptic number.

1249554072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1249554072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1689534000).

1249554072 is an abundant number, since it is smaller than the sum of its proper divisors (2129513928).

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

1249554072 is a wasteful number, since it uses less digits than its factorization.

1249554072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17740 (or 17736 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 1249554072 is about 35349.0321225348. The cubic root of 1249554072 is about 1077.0892334135.

The spelling of 1249554072 in words is "one billion, two hundred forty-nine million, five hundred fifty-four thousand, seventy-two".