69323040 has 144 divisors (see below), whose sum is σ = 245464128. Its totient is φ = 18475776.

The previous prime is 69323029. The next prime is 69323047. The reversal of 69323040 is 4032396.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 69322995 and 69323013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69323047) 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, 37989 + ... + 39771.

It is an arithmetic number, because the mean of its divisors is an integer number (1704612).

Almost surely, 2^69323040 is an apocalyptic number.

69323040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69323040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122732064).

69323040 is an abundant number, since it is smaller than the sum of its proper divisors (176141088).

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

69323040 is a wasteful number, since it uses less digits than its factorization.

69323040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813 (or 1793 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 69323040 is about 8326.0458802483. The cubic root of 69323040 is about 410.7956787182.

The spelling of 69323040 in words is "sixty-nine million, three hundred twenty-three thousand, forty".