87049478 has 16 divisors (see below), whose sum is σ = 134159760. Its totient is φ = 42336000.

The previous prime is 87049477. The next prime is 87049489. The reversal of 87049478 is 87494078.

It is a super-2 number, since 2×87049478² = 15155223240144968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87049477) 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, 29678 + ... + 32478.

It is an arithmetic number, because the mean of its divisors is an integer number (8384985).

Almost surely, 2^87049478 is an apocalyptic number.

87049478 is a deficient number, since it is larger than the sum of its proper divisors (47110282).

87049478 is a wasteful number, since it uses less digits than its factorization.

87049478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 87049478 is about 9330.0309752969. The cubic root of 87049478 is about 443.1887460107.

The spelling of 87049478 in words is "eighty-seven million, forty-nine thousand, four hundred seventy-eight".