87457738 has 8 divisors (see below), whose sum is σ = 133661988. Its totient is φ = 42903744.

The previous prime is 87457691. The next prime is 87457739. The reversal of 87457738 is 83775478.

It can be written as a sum of positive squares in 2 ways, for example, as 86806489 + 651249 = 9317^2 + 807^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 87457691 and 87457700.

It is not an unprimeable number, because it can be changed into a prime (87457739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412431 + ... + 412642.

Almost surely, 2^87457738 is an apocalyptic number.

87457738 is a deficient number, since it is larger than the sum of its proper divisors (46204250).

87457738 is a wasteful number, since it uses less digits than its factorization.

87457738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825128.

The product of its digits is 1317120, while the sum is 49.

The square root of 87457738 is about 9351.8841951769. The cubic root of 87457738 is about 443.8805139343.

The spelling of 87457738 in words is "eighty-seven million, four hundred fifty-seven thousand, seven hundred thirty-eight".