72690858 has 40 divisors (see below), whose sum is σ = 166364352. Its totient is φ = 23712264.

The previous prime is 72690857. The next prime is 72690859. The reversal of 72690858 is 85809627.

It is an interprime number because it is at equal distance from previous prime (72690857) and next prime (72690859).

It is not an unprimeable number, because it can be changed into a prime (72690851) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2841 + ... + 12387.

Almost surely, 2^72690858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72690858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83182176).

72690858 is an abundant number, since it is smaller than the sum of its proper divisors (93673494).

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

72690858 is a wasteful number, since it uses less digits than its factorization.

72690858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9608 (or 9599 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 72690858 is about 8525.8933842736. The cubic root of 72690858 is about 417.3431263091.

The spelling of 72690858 in words is "seventy-two million, six hundred ninety thousand, eight hundred fifty-eight".