22415406 has 32 divisors (see below), whose sum is σ = 48562080. Its totient is φ = 6856704.

The previous prime is 22415399. The next prime is 22415413. The reversal of 22415406 is 60451422.

It is an interprime number because it is at equal distance from previous prime (22415399) and next prime (22415413).

It is a super-2 number, since 2×22415406² = 1004900852289672, which contains 22 as substring.

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, 14310 + ... + 15798.

It is an arithmetic number, because the mean of its divisors is an integer number (1517565).

Almost surely, 2^22415406 is an apocalyptic number.

22415406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22415406 is an abundant number, since it is smaller than the sum of its proper divisors (26146674).

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

22415406 is a wasteful number, since it uses less digits than its factorization.

22415406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 22415406 is about 4734.4911025368. The cubic root of 22415406 is about 281.9565598798.

Adding to 22415406 its reverse (60451422), we get a palindrome (82866828).

The spelling of 22415406 in words is "twenty-two million, four hundred fifteen thousand, four hundred six".