270778728 has 128 divisors (see below), whose sum is σ = 798912000. Its totient is φ = 75582720.

The previous prime is 270778723. The next prime is 270778733. The reversal of 270778728 is 827877072.

It is an interprime number because it is at equal distance from previous prime (270778723) and next prime (270778733).

It is a super-2 number, since 2×270778728² = 146642239074595968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (270778721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184863 + ... + 186321.

It is an arithmetic number, because the mean of its divisors is an integer number (6241500).

Almost surely, 2^270778728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 270778728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399456000).

270778728 is an abundant number, since it is smaller than the sum of its proper divisors (528133272).

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

270778728 is a wasteful number, since it uses less digits than its factorization.

270778728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535 (or 1531 counting only the distinct ones).

The product of its (nonzero) digits is 614656, while the sum is 48.

The square root of 270778728 is about 16455.3556023563. The cubic root of 270778728 is about 646.9511878431.

The spelling of 270778728 in words is "two hundred seventy million, seven hundred seventy-eight thousand, seven hundred twenty-eight".