72890070 has 32 divisors (see below), whose sum is σ = 190840320. Its totient is φ = 17670240.

The previous prime is 72890047. The next prime is 72890107. The reversal of 72890070 is 7009827.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110110 + ... + 110769.

It is an arithmetic number, because the mean of its divisors is an integer number (5963760).

Almost surely, 2^72890070 is an apocalyptic number.

72890070 is an abundant number, since it is smaller than the sum of its proper divisors (117950250).

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

72890070 is a wasteful number, since it uses less digits than its factorization.

72890070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220900.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 72890070 is about 8537.5681549256. The cubic root of 72890070 is about 417.7240266836.

Adding to 72890070 its reverse (7009827), we get a palindrome (79899897).

The spelling of 72890070 in words is "seventy-two million, eight hundred ninety thousand, seventy".