69120020 has 12 divisors (see below), whose sum is σ = 145152084. Its totient is φ = 27648000.

The previous prime is 69120019. The next prime is 69120053. The reversal of 69120020 is 2002196.

It can be written as a sum of positive squares in 2 ways, for example, as 7214596 + 61905424 = 2686^2 + 7868^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 3456001 = 69120020 / (6 + 9 + 1 + 2 + 0 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 69119974 and 69120001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1727981 + ... + 1728020.

It is an arithmetic number, because the mean of its divisors is an integer number (12096007).

Almost surely, 2^69120020 is an apocalyptic number.

It is an amenable number.

69120020 is an abundant number, since it is smaller than the sum of its proper divisors (76032064).

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

69120020 is a wasteful number, since it uses less digits than its factorization.

69120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3456010 (or 3456008 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 69120020 is about 8313.8450791436. The cubic root of 69120020 is about 410.3942667852.

It can be divided in two parts, 691200 and 20, that multiplied together give a cube (13824000 = 240³).

The spelling of 69120020 in words is "sixty-nine million, one hundred twenty thousand, twenty".