126819380 has 24 divisors (see below), whose sum is σ = 267867432. Its totient is φ = 50433152.

The previous prime is 126819361. The next prime is 126819391. The reversal of 126819380 is 83918621.

It can be written as a sum of positive squares in 4 ways, for example, as 30426256 + 96393124 = 5516^2 + 9818^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14867 + ... + 21786.

It is an arithmetic number, because the mean of its divisors is an integer number (11161143).

Almost surely, 2^126819380 is an apocalyptic number.

126819380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126819380 is an abundant number, since it is smaller than the sum of its proper divisors (141048052).

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

126819380 is a wasteful number, since it uses less digits than its factorization.

126819380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36835 (or 36833 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 126819380 is about 11261.4111016338. The cubic root of 126819380 is about 502.4141648558.

The spelling of 126819380 in words is "one hundred twenty-six million, eight hundred nineteen thousand, three hundred eighty".