71498412 has 18 divisors (see below), whose sum is σ = 180732188. Its totient is φ = 23832792.

The previous prime is 71498411. The next prime is 71498423. The reversal of 71498412 is 21489417.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×71498412² = 10224045837043488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1986067 = 71498412 / (7 + 1 + 4 + 9 + 8 + 4 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (71498411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 992998 + ... + 993069.

Almost surely, 2^71498412 is an apocalyptic number.

It is an amenable number.

71498412 is an abundant number, since it is smaller than the sum of its proper divisors (109233776).

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

71498412 is a wasteful number, since it uses less digits than its factorization.

71498412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986077 (or 1986072 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 71498412 is about 8455.6733617140. The cubic root of 71498412 is about 415.0484522710.

The spelling of 71498412 in words is "seventy-one million, four hundred ninety-eight thousand, four hundred twelve".