87433478 has 48 divisors (see below), whose sum is σ = 153893520. Its totient is φ = 36936000.

The previous prime is 87433471. The next prime is 87433481.

87433478 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×87433478² = 15289226150352968, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87433471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 802088 + ... + 802196.

It is an arithmetic number, because the mean of its divisors is an integer number (3206115).

Almost surely, 2^87433478 is an apocalyptic number.

87433478 is a deficient number, since it is larger than the sum of its proper divisors (66460042).

87433478 is a wasteful number, since it uses less digits than its factorization.

87433478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 242 counting only the distinct ones).

The product of its digits is 451584, while the sum is 44.

The square root of 87433478 is about 9350.5870403948. The cubic root of 87433478 is about 443.8394673009.

It can be divided in two parts, 8743 and 3478, that added together give a palindrome (12221).

The spelling of 87433478 in words is "eighty-seven million, four hundred thirty-three thousand, four hundred seventy-eight".