1224457790 has 8 divisors (see below), whose sum is σ = 2204024040. Its totient is φ = 489783112.

The previous prime is 1224457789. The next prime is 1224457799. The reversal of 1224457790 is 977544221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224457799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61222880 + ... + 61222899.

It is an arithmetic number, because the mean of its divisors is an integer number (275503005).

Almost surely, 2^1224457790 is an apocalyptic number.

1224457790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1224457790 is a deficient number, since it is larger than the sum of its proper divisors (979566250).

1224457790 is a wasteful number, since it uses less digits than its factorization.

1224457790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122445786.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 1224457790 is about 34992.2532855488. The cubic root of 1224457790 is about 1069.8295911693.

The spelling of 1224457790 in words is "one billion, two hundred twenty-four million, four hundred fifty-seven thousand, seven hundred ninety".