72877826 has 16 divisors (see below), whose sum is σ = 125414784. Its totient is φ = 31113024.

The previous prime is 72877817. The next prime is 72877829. The reversal of 72877826 is 62877827.

It is a happy number.

It is a super-2 number, since 2×72877826² = 10622355044972552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72877829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6215 + ... + 13578.

It is an arithmetic number, because the mean of its divisors is an integer number (7838424).

Almost surely, 2^72877826 is an apocalyptic number.

72877826 is a deficient number, since it is larger than the sum of its proper divisors (52536958).

72877826 is a wasteful number, since it uses less digits than its factorization.

72877826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20065.

The product of its digits is 526848, while the sum is 47.

The square root of 72877826 is about 8536.8510587921. The cubic root of 72877826 is about 417.7006357544.

Subtracting from 72877826 its reverse (62877827), we obtain a palindrome (9999999).

The spelling of 72877826 in words is "seventy-two million, eight hundred seventy-seven thousand, eight hundred twenty-six".