1622790450 has 126 divisors (see below), whose sum is σ = 4547064717. Its totient is φ = 430693200.

The previous prime is 1622790431. The next prime is 1622790469. The reversal of 1622790450 is 540972261.

It is an interprime number because it is at equal distance from previous prime (1622790431) and next prime (1622790469).

It can be written as a sum of positive squares in 2 ways, for example, as 1590334641 + 32455809 = 39879^2 + 5697^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=28485.

It is a super-2 number, since 2×1622790450² = 5266897689222405000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 7690845 + ... + 7691055.

Almost surely, 2^1622790450 is an apocalyptic number.

1622790450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1622790450

1622790450 is an abundant number, since it is smaller than the sum of its proper divisors (2924274267).

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

1622790450 is an frugal number, since it uses more digits than its factorization.

1622790450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1622790450 is about 40283.8733241976. The cubic root of 1622790450 is about 1175.1342414907.

The spelling of 1622790450 in words is "one billion, six hundred twenty-two million, seven hundred ninety thousand, four hundred fifty".