8149072 has 10 divisors (see below), whose sum is σ = 15788858. Its totient is φ = 4074528.

The previous prime is 8149027. The next prime is 8149079. The reversal of 8149072 is 2709418.

It can be written as a sum of positive squares in only one way, i.e., 7595536 + 553536 = 2756^2 + 744^2 .

It is a super-2 number, since 2×8149072² = 132814748922368, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8149079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254643 + ... + 254674.

Almost surely, 2^8149072 is an apocalyptic number.

It is an amenable number.

8149072 is a deficient number, since it is larger than the sum of its proper divisors (7639786).

8149072 is a wasteful number, since it uses less digits than its factorization.

8149072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509325 (or 509319 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 8149072 is about 2854.6579479861. The cubic root of 8149072 is about 201.2346294345.

The spelling of 8149072 in words is "eight million, one hundred forty-nine thousand, seventy-two".