1250428578 has 32 divisors (see below), whose sum is σ = 2927836800. Its totient is φ = 348551040.

The previous prime is 1250428577. The next prime is 1250428601. The reversal of 1250428578 is 8758240521.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1250428573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361353 + ... + 364796.

It is an arithmetic number, because the mean of its divisors is an integer number (91494900).

Almost surely, 2^1250428578 is an apocalyptic number.

1250428578 is an abundant number, since it is smaller than the sum of its proper divisors (1677408222).

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

1250428578 is a wasteful number, since it uses less digits than its factorization.

1250428578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726202.

The product of its (nonzero) digits is 179200, while the sum is 42.

The square root of 1250428578 is about 35361.3995480948. The cubic root of 1250428578 is about 1077.3404433898.

The spelling of 1250428578 in words is "one billion, two hundred fifty million, four hundred twenty-eight thousand, five hundred seventy-eight".