73821402 has 32 divisors (see below), whose sum is σ = 168053760. Its totient is φ = 24006240.

The previous prime is 73821389. The next prime is 73821409. The reversal of 73821402 is 20412837.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (73821409) 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, 14458 + ... + 18885.

It is an arithmetic number, because the mean of its divisors is an integer number (5251680).

Almost surely, 2^73821402 is an apocalyptic number.

73821402 is an abundant number, since it is smaller than the sum of its proper divisors (94232358).

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

73821402 is a wasteful number, since it uses less digits than its factorization.

73821402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33395 (or 33389 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 73821402 is about 8591.9381981018. The cubic root of 73821402 is about 419.4956190176.

The spelling of 73821402 in words is "seventy-three million, eight hundred twenty-one thousand, four hundred two".