69478540 has 24 divisors (see below), whose sum is σ = 149299920. Its totient is φ = 27144768.

The previous prime is 69478529. The next prime is 69478543. The reversal of 69478540 is 4587496.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (69478543) 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, 39535 + ... + 41254.

It is an arithmetic number, because the mean of its divisors is an integer number (6220830).

Almost surely, 2^69478540 is an apocalyptic number.

It is an amenable number.

69478540 is an abundant number, since it is smaller than the sum of its proper divisors (79821380).

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

69478540 is a wasteful number, since it uses less digits than its factorization.

69478540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80841 (or 80839 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 69478540 is about 8335.3788156268. The cubic root of 69478540 is about 411.1026042121.

The spelling of 69478540 in words is "sixty-nine million, four hundred seventy-eight thousand, five hundred forty".