3421622778 has 32 divisors (see below), whose sum is σ = 7833546240. Its totient is φ = 976019760.

The previous prime is 3421622773. The next prime is 3421622801. The reversal of 3421622778 is 8772261243.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (3421622773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39808 + ... + 91803.

It is an arithmetic number, because the mean of its divisors is an integer number (244798320).

Almost surely, 2^3421622778 is an apocalyptic number.

3421622778 is an abundant number, since it is smaller than the sum of its proper divisors (4411923462).

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

3421622778 is a wasteful number, since it uses less digits than its factorization.

3421622778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132242.

The product of its digits is 225792, while the sum is 42.

The square root of 3421622778 is about 58494.6388825506. The cubic root of 3421622778 is about 1506.8755149334.

The spelling of 3421622778 in words is "three billion, four hundred twenty-one million, six hundred twenty-two thousand, seven hundred seventy-eight".