1020400746 has 8 divisors (see below), whose sum is σ = 2040801504. Its totient is φ = 340133580.

The previous prime is 1020400739. The next prime is 1020400747. The reversal of 1020400746 is 6470040201.

It is a sphenic number, since it is the product of 3 distinct primes.

1020400746 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1020400747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85033390 + ... + 85033401.

It is an arithmetic number, because the mean of its divisors is an integer number (255100188).

Almost surely, 2^1020400746 is an apocalyptic number.

1020400746 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1020400746 is a wasteful number, since it uses less digits than its factorization.

1020400746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170066796.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 1020400746 is about 31943.7121512200. The cubic root of 1020400746 is about 1006.7545223724.

Adding to 1020400746 its reverse (6470040201), we get a palindrome (7490440947).

The spelling of 1020400746 in words is "one billion, twenty million, four hundred thousand, seven hundred forty-six".