71530498 has 16 divisors (see below), whose sum is σ = 115702776. Its totient is φ = 32970240.

The previous prime is 71530493. The next prime is 71530531. The reversal of 71530498 is 89403517.

It can be written as a sum of positive squares in 4 ways, for example, as 57714409 + 13816089 = 7597^2 + 3717^2 .

It is a super-2 number, since 2×71530498² = 10233224288256008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71530493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26290 + ... + 28882.

Almost surely, 2^71530498 is an apocalyptic number.

71530498 is a deficient number, since it is larger than the sum of its proper divisors (44172278).

71530498 is a wasteful number, since it uses less digits than its factorization.

71530498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3669.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 71530498 is about 8457.5704549238. The cubic root of 71530498 is about 415.1105294214.

It can be divided in two parts, 715 and 30498, that added together give a palindrome (31213).

The spelling of 71530498 in words is "seventy-one million, five hundred thirty thousand, four hundred ninety-eight".