72070620 has 48 divisors (see below), whose sum is σ = 206726688. Its totient is φ = 18749440.

The previous prime is 72070601. The next prime is 72070657. The reversal of 72070620 is 2607027.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12189 + ... + 17108.

It is an arithmetic number, because the mean of its divisors is an integer number (4306806).

Almost surely, 2^72070620 is an apocalyptic number.

It is an amenable number.

72070620 is an abundant number, since it is smaller than the sum of its proper divisors (134656068).

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

72070620 is a wasteful number, since it uses less digits than its factorization.

72070620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29350 (or 29348 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 72070620 is about 8489.4416777548. The cubic root of 72070620 is about 416.1527345354.

Adding to 72070620 its reverse (2607027), we get a palindrome (74677647).

The spelling of 72070620 in words is "seventy-two million, seventy thousand, six hundred twenty".