72062778 has 8 divisors (see below), whose sum is σ = 144125568. Its totient is φ = 24020924.

The previous prime is 72062761. The next prime is 72062803. The reversal of 72062778 is 87726027.

It is a sphenic number, since it is the product of 3 distinct primes.

72062778 is an admirable number.

It is a Curzon 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, 6005226 + ... + 6005237.

It is an arithmetic number, because the mean of its divisors is an integer number (18015696).

Almost surely, 2^72062778 is an apocalyptic number.

72062778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72062778 is a wasteful number, since it uses less digits than its factorization.

72062778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12010468.

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 72062778 is about 8488.9797973608. The cubic root of 72062778 is about 416.1376401363.

The spelling of 72062778 in words is "seventy-two million, sixty-two thousand, seven hundred seventy-eight".