253720378 has 16 divisors (see below), whose sum is σ = 385680960. Its totient is φ = 125168256.

The previous prime is 253720361. The next prime is 253720451. The reversal of 253720378 is 873027352.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67825 + ... + 71467.

It is an arithmetic number, because the mean of its divisors is an integer number (24105060).

Almost surely, 2^253720378 is an apocalyptic number.

253720378 is a deficient number, since it is larger than the sum of its proper divisors (131960582).

253720378 is a wasteful number, since it uses less digits than its factorization.

253720378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4101.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 253720378 is about 15928.6025124617. The cubic root of 253720378 is about 633.0700723631.

The spelling of 253720378 in words is "two hundred fifty-three million, seven hundred twenty thousand, three hundred seventy-eight".