251420996 has 24 divisors (see below), whose sum is σ = 464520000. Its totient is φ = 118740384.

The previous prime is 251420971. The next prime is 251420999. The reversal of 251420996 is 699024152.

251420996 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (251420999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21785 + ... + 31263.

It is an arithmetic number, because the mean of its divisors is an integer number (19355000).

Almost surely, 2^251420996 is an apocalyptic number.

It is an amenable number.

251420996 is a deficient number, since it is larger than the sum of its proper divisors (213099004).

251420996 is a wasteful number, since it uses less digits than its factorization.

251420996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9851 (or 9849 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 251420996 is about 15856.2604670837. The cubic root of 251420996 is about 631.1518325141.

The spelling of 251420996 in words is "two hundred fifty-one million, four hundred twenty thousand, nine hundred ninety-six".