1422752640 has 128 divisors (see below), whose sum is σ = 4546156320. Its totient is φ = 378470400.

The previous prime is 1422752563. The next prime is 1422752677. The reversal of 1422752640 is 462572241.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1184040 + ... + 1185240.

Almost surely, 2^1422752640 is an apocalyptic number.

1422752640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1422752640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2273078160).

1422752640 is an abundant number, since it is smaller than the sum of its proper divisors (3123403680).

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

1422752640 is a wasteful number, since it uses less digits than its factorization.

1422752640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 1422752640 is about 37719.3934203614. The cubic root of 1422752640 is about 1124.7166733427.

The spelling of 1422752640 in words is "one billion, four hundred twenty-two million, seven hundred fifty-two thousand, six hundred forty".